drivers: call adapter_get_required_serial() in jtag_libusb_open()
[openocd.git] / src / jtag / aice / aice_usb.c
index d77b26b17473d19fe08b967ae6985ff62cf87387..5d586763c4390307756b3cc2c1c7f040bc802a58 100644 (file)
@@ -19,7 +19,8 @@
 #include "config.h"
 #endif
 
-#include <jtag/drivers/libusb_common.h>
+#include <helper/system.h>
+#include <jtag/drivers/libusb_helper.h>
 #include <helper/log.h>
 #include <helper/time_support.h>
 #include <target/target.h>
@@ -40,41 +41,41 @@ static int aice_max_retry_times = 50;
 static enum aice_target_endian data_endian;
 
 /* Constants for AICE command format length */
-static const int32_t AICE_FORMAT_HTDA = 3;
-static const int32_t AICE_FORMAT_HTDC  = 7;
-static const int32_t AICE_FORMAT_HTDMA = 4;
-static const int32_t AICE_FORMAT_HTDMB = 8;
-static const int32_t AICE_FORMAT_HTDMC = 8;
-static const int32_t AICE_FORMAT_HTDMD = 12;
-static const int32_t AICE_FORMAT_DTHA  = 6;
-static const int32_t AICE_FORMAT_DTHB  = 2;
-static const int32_t AICE_FORMAT_DTHMA = 8;
-static const int32_t AICE_FORMAT_DTHMB = 4;
+#define AICE_FORMAT_HTDA        (3)
+#define AICE_FORMAT_HTDC        (7)
+#define AICE_FORMAT_HTDMA       (4)
+#define AICE_FORMAT_HTDMB       (8)
+#define AICE_FORMAT_HTDMC       (8)
+#define AICE_FORMAT_HTDMD       (12)
+#define AICE_FORMAT_DTHA        (6)
+#define AICE_FORMAT_DTHB        (2)
+#define AICE_FORMAT_DTHMA       (8)
+#define AICE_FORMAT_DTHMB       (4)
 
 /* Constants for AICE command */
-static const uint8_t AICE_CMD_SCAN_CHAIN = 0x00;
-static const uint8_t AICE_CMD_T_READ_MISC = 0x20;
-static const uint8_t AICE_CMD_T_READ_EDMSR = 0x21;
-static const uint8_t AICE_CMD_T_READ_DTR = 0x22;
-static const uint8_t AICE_CMD_T_READ_MEM_B = 0x24;
-static const uint8_t AICE_CMD_T_READ_MEM_H = 0x25;
-static const uint8_t AICE_CMD_T_READ_MEM = 0x26;
-static const uint8_t AICE_CMD_T_FASTREAD_MEM = 0x27;
-static const uint8_t AICE_CMD_T_WRITE_MISC = 0x28;
-static const uint8_t AICE_CMD_T_WRITE_EDMSR    = 0x29;
-static const uint8_t AICE_CMD_T_WRITE_DTR = 0x2A;
-static const uint8_t AICE_CMD_T_WRITE_DIM = 0x2B;
-static const uint8_t AICE_CMD_T_WRITE_MEM_B = 0x2C;
-static const uint8_t AICE_CMD_T_WRITE_MEM_H = 0x2D;
-static const uint8_t AICE_CMD_T_WRITE_MEM = 0x2E;
-static const uint8_t AICE_CMD_T_FASTWRITE_MEM = 0x2F;
-static const uint8_t AICE_CMD_T_EXECUTE = 0x3E;
-static const uint8_t AICE_CMD_READ_CTRL = 0x50;
-static const uint8_t AICE_CMD_WRITE_CTRL = 0x51;
-static const uint8_t AICE_CMD_BATCH_BUFFER_READ = 0x60;
-static const uint8_t AICE_CMD_READ_DTR_TO_BUFFER = 0x61;
-static const uint8_t AICE_CMD_BATCH_BUFFER_WRITE = 0x68;
-static const uint8_t AICE_CMD_WRITE_DTR_FROM_BUFFER = 0x69;
+#define AICE_CMD_SCAN_CHAIN             0x00
+#define AICE_CMD_T_READ_MISC            0x20
+#define AICE_CMD_T_READ_EDMSR           0x21
+#define AICE_CMD_T_READ_DTR             0x22
+#define AICE_CMD_T_READ_MEM_B           0x24
+#define AICE_CMD_T_READ_MEM_H           0x25
+#define AICE_CMD_T_READ_MEM             0x26
+#define AICE_CMD_T_FASTREAD_MEM         0x27
+#define AICE_CMD_T_WRITE_MISC           0x28
+#define AICE_CMD_T_WRITE_EDMSR          0x29
+#define AICE_CMD_T_WRITE_DTR            0x2A
+#define AICE_CMD_T_WRITE_DIM            0x2B
+#define AICE_CMD_T_WRITE_MEM_B          0x2C
+#define AICE_CMD_T_WRITE_MEM_H          0x2D
+#define AICE_CMD_T_WRITE_MEM            0x2E
+#define AICE_CMD_T_FASTWRITE_MEM        0x2F
+#define AICE_CMD_T_EXECUTE              0x3E
+#define AICE_CMD_READ_CTRL              0x50
+#define AICE_CMD_WRITE_CTRL             0x51
+#define AICE_CMD_BATCH_BUFFER_READ      0x60
+#define AICE_CMD_READ_DTR_TO_BUFFER     0x61
+#define AICE_CMD_BATCH_BUFFER_WRITE     0x68
+#define AICE_CMD_WRITE_DTR_FROM_BUFFER  0x69
 
 /***************************************************************************/
 /* AICE commands' pack/unpack functions */
@@ -349,41 +350,53 @@ static void aice_unpack_dthmb(uint8_t *cmd_ack_code, uint8_t *target_id,
 /* calls the given usb_bulk_* function, allowing for the data to
  * trickle in with some timeouts  */
 static int usb_bulk_with_retries(
-                       int (*f)(jtag_libusb_device_handle *, int, char *, int, int),
-                       jtag_libusb_device_handle *dev, int ep,
-                       char *bytes, int size, int timeout)
+                       int (*f)(struct libusb_device_handle *, int, char *, int, int, int *),
+                       struct libusb_device_handle *dev, int ep,
+                       char *bytes, int size, int timeout, int *transferred)
 {
        int tries = 3, count = 0;
 
        while (tries && (count < size)) {
-               int result = f(dev, ep, bytes + count, size - count, timeout);
-               if (result > 0)
+               int result, ret;
+
+               ret = f(dev, ep, bytes + count, size - count, timeout, &result);
+               if (ret == ERROR_OK)
                        count += result;
-               else if ((-ETIMEDOUT != result) || !--tries)
-                       return result;
+               else if ((ret != ERROR_TIMEOUT_REACHED) || !--tries)
+                       return ret;
        }
-       return count;
+
+       *transferred = count;
+       return ERROR_OK;
 }
 
-static int wrap_usb_bulk_write(jtag_libusb_device_handle *dev, int ep,
-               char *buff, int size, int timeout)
+static int wrap_usb_bulk_write(struct libusb_device_handle *dev, int ep,
+               char *buff, int size, int timeout, int *transferred)
 {
+
        /* usb_bulk_write() takes const char *buff */
-       return jtag_libusb_bulk_write(dev, ep, buff, size, timeout);
+       jtag_libusb_bulk_write(dev, ep, buff, size, timeout, transferred);
+
+       return 0;
 }
 
-static inline int usb_bulk_write_ex(jtag_libusb_device_handle *dev, int ep,
+static inline int usb_bulk_write_ex(struct libusb_device_handle *dev, int ep,
                char *bytes, int size, int timeout)
 {
-       return usb_bulk_with_retries(&wrap_usb_bulk_write,
-                       dev, ep, bytes, size, timeout);
+       int tr = 0;
+
+       usb_bulk_with_retries(&wrap_usb_bulk_write,
+                       dev, ep, bytes, size, timeout, &tr);
+       return tr;
 }
 
-static inline int usb_bulk_read_ex(jtag_libusb_device_handle *dev, int ep,
+static inline int usb_bulk_read_ex(struct libusb_device_handle *dev, int ep,
                char *bytes, int size, int timeout)
 {
-       return usb_bulk_with_retries(&jtag_libusb_bulk_read,
-                       dev, ep, bytes, size, timeout);
+       int tr = 0;
+       usb_bulk_with_retries(&jtag_libusb_bulk_read,
+                       dev, ep, bytes, size, timeout, &tr);
+       return tr;
 }
 
 /* Write data from out_buffer to USB. */
@@ -400,7 +413,7 @@ static int aice_usb_write(uint8_t *out_buffer, int out_length)
        result = usb_bulk_write_ex(aice_handler.usb_handle, aice_handler.usb_write_ep,
                        (char *)out_buffer, out_length, AICE_USB_TIMEOUT);
 
-       DEBUG_JTAG_IO("aice_usb_write, out_length = %i, result = %i",
+       LOG_DEBUG_IO("aice_usb_write, out_length = %i, result = %i",
                        out_length, result);
 
        return result;
@@ -409,10 +422,10 @@ static int aice_usb_write(uint8_t *out_buffer, int out_length)
 /* Read data from USB into in_buffer. */
 static int aice_usb_read(uint8_t *in_buffer, int expected_size)
 {
-       int32_t result = usb_bulk_read_ex(aice_handler.usb_handle, aice_handler.usb_read_ep,
+       int result = usb_bulk_read_ex(aice_handler.usb_handle, aice_handler.usb_read_ep,
                        (char *)in_buffer, expected_size, AICE_USB_TIMEOUT);
 
-       DEBUG_JTAG_IO("aice_usb_read, result = %" PRId32, result);
+       LOG_DEBUG_IO("aice_usb_read, result = %d", result);
 
        return result;
 }
@@ -431,7 +444,7 @@ static int aice_usb_packet_flush(void)
        if (usb_out_packets_buffer_length == 0)
                return 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                LOG_DEBUG("Flush usb packets (AICE_COMMAND_MODE_PACK)");
 
                if (aice_usb_write(usb_out_packets_buffer,
@@ -445,7 +458,7 @@ static int aice_usb_packet_flush(void)
                usb_out_packets_buffer_length = 0;
                usb_in_packets_buffer_length = 0;
 
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                LOG_DEBUG("Flush usb packets (AICE_COMMAND_MODE_BATCH)");
 
                /* use BATCH_BUFFER_WRITE to fill command-batch-buffer */
@@ -472,7 +485,9 @@ static int aice_usb_packet_flush(void)
 
                i = 0;
                while (1) {
-                       aice_read_ctrl(AICE_READ_CTRL_BATCH_STATUS, &batch_status);
+                       int retval = aice_read_ctrl(AICE_READ_CTRL_BATCH_STATUS, &batch_status);
+                       if (retval != ERROR_OK)
+                               return retval;
 
                        if (batch_status & 0x1)
                                return ERROR_OK;
@@ -493,9 +508,9 @@ static int aice_usb_packet_append(uint8_t *out_buffer, int out_length, int in_le
 {
        uint32_t max_packet_size = AICE_OUT_PACKETS_BUFFER_SIZE;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                max_packet_size = AICE_OUT_PACK_COMMAND_SIZE;
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                max_packet_size = AICE_OUT_BATCH_COMMAND_SIZE;
        } else {
                /* AICE_COMMAND_MODE_NORMAL */
@@ -540,11 +555,10 @@ static int aice_reset_box(void)
 
 static int aice_scan_chain(uint32_t *id_codes, uint8_t *num_of_ids)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -555,9 +569,9 @@ static int aice_scan_chain(uint32_t *id_codes, uint8_t *num_of_ids)
                LOG_DEBUG("SCAN_CHAIN, length: 0x0F");
 
                /** TODO: modify receive length */
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHA);
-               if (AICE_FORMAT_DTHA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRIu32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHA);
+               if (result != AICE_FORMAT_DTHA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHA, result);
                        return ERROR_FAIL;
                }
@@ -569,7 +583,7 @@ static int aice_scan_chain(uint32_t *id_codes, uint8_t *num_of_ids)
                if (cmd_ack_code != AICE_CMD_SCAN_CHAIN) {
 
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_SCAN_CHAIN, cmd_ack_code);
                                return ERROR_FAIL;
                        }
@@ -600,10 +614,8 @@ static int aice_scan_chain(uint32_t *id_codes, uint8_t *num_of_ids)
 
 int aice_read_ctrl(uint32_t address, uint32_t *data)
 {
-       int32_t result;
-
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        aice_pack_htda(AICE_CMD_READ_CTRL, 0, address);
@@ -612,9 +624,9 @@ int aice_read_ctrl(uint32_t address, uint32_t *data)
 
        LOG_DEBUG("READ_CTRL, address: 0x%" PRIx32, address);
 
-       result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHA);
-       if (AICE_FORMAT_DTHA != result) {
-               LOG_ERROR("aice_usb_read failed (requested=%" PRIu32 ", result=%" PRId32 ")",
+       int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHA);
+       if (result != AICE_FORMAT_DTHA) {
+               LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                AICE_FORMAT_DTHA, result);
                return ERROR_FAIL;
        }
@@ -626,8 +638,8 @@ int aice_read_ctrl(uint32_t address, uint32_t *data)
        LOG_DEBUG("READ_CTRL response, data: 0x%" PRIx32, *data);
 
        if (cmd_ack_code != AICE_CMD_READ_CTRL) {
-               LOG_ERROR("aice command error (command=0x%" PRIx32 ", response=0x%" PRIx8 ")",
-                               (uint32_t)AICE_CMD_READ_CTRL, cmd_ack_code);
+               LOG_ERROR("aice command error (command=0x%x, response=0x%" PRIx8 ")",
+                               AICE_CMD_READ_CTRL, cmd_ack_code);
                return ERROR_FAIL;
        }
 
@@ -636,11 +648,9 @@ int aice_read_ctrl(uint32_t address, uint32_t *data)
 
 int aice_write_ctrl(uint32_t address, uint32_t data)
 {
-       int32_t result;
-
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdc(AICE_CMD_WRITE_CTRL, 0, address, data, AICE_LITTLE_ENDIAN);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDC,
                                AICE_FORMAT_DTHB);
@@ -652,9 +662,9 @@ int aice_write_ctrl(uint32_t address, uint32_t data)
 
        LOG_DEBUG("WRITE_CTRL, address: 0x%" PRIx32 ", data: 0x%" PRIx32, address, data);
 
-       result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHB);
-       if (AICE_FORMAT_DTHB != result) {
-               LOG_ERROR("aice_usb_read failed (requested=%" PRIu32 ", result=%" PRId32 ")",
+       int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHB);
+       if (result != AICE_FORMAT_DTHB) {
+               LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                AICE_FORMAT_DTHB, result);
                return ERROR_FAIL;
        }
@@ -666,7 +676,7 @@ int aice_write_ctrl(uint32_t address, uint32_t data)
        LOG_DEBUG("WRITE_CTRL response");
 
        if (cmd_ack_code != AICE_CMD_WRITE_CTRL) {
-               LOG_ERROR("aice command error (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+               LOG_ERROR("aice command error (command=0x%x, response=0x%" PRIx8 ")",
                                AICE_CMD_WRITE_CTRL, cmd_ack_code);
                return ERROR_FAIL;
        }
@@ -674,13 +684,12 @@ int aice_write_ctrl(uint32_t address, uint32_t data)
        return ERROR_OK;
 }
 
-int aice_read_dtr(uint8_t target_id, uint32_t *data)
+static int aice_read_dtr(uint8_t target_id, uint32_t *data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -690,9 +699,9 @@ int aice_read_dtr(uint8_t target_id, uint32_t *data)
 
                LOG_DEBUG("READ_DTR, COREID: %" PRIu8, target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
-               if (AICE_FORMAT_DTHMA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
+               if (result != AICE_FORMAT_DTHMA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMA, result);
                        return ERROR_FAIL;
                }
@@ -709,7 +718,7 @@ int aice_read_dtr(uint8_t target_id, uint32_t *data)
                } else {
 
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_READ_DTR, cmd_ack_code);
                                return ERROR_FAIL;
                        }
@@ -725,14 +734,13 @@ int aice_read_dtr(uint8_t target_id, uint32_t *data)
        return ERROR_OK;
 }
 
-int aice_read_dtr_to_buffer(uint8_t target_id, uint32_t buffer_idx)
+static int aice_read_dtr_to_buffer(uint8_t target_id, uint32_t buffer_idx)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdma(AICE_CMD_READ_DTR_TO_BUFFER, target_id, 0, buffer_idx);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMA,
                                AICE_FORMAT_DTHMB);
@@ -745,9 +753,9 @@ int aice_read_dtr_to_buffer(uint8_t target_id, uint32_t buffer_idx)
 
                LOG_DEBUG("READ_DTR_TO_BUFFER, COREID: %" PRIu8, target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")", AICE_FORMAT_DTHMB, result);
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)", AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
 
@@ -760,7 +768,7 @@ int aice_read_dtr_to_buffer(uint8_t target_id, uint32_t buffer_idx)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_READ_DTR_TO_BUFFER, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -777,14 +785,13 @@ int aice_read_dtr_to_buffer(uint8_t target_id, uint32_t buffer_idx)
        return ERROR_OK;
 }
 
-int aice_write_dtr(uint8_t target_id, uint32_t data)
+static int aice_write_dtr(uint8_t target_id, uint32_t data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdmc(AICE_CMD_T_WRITE_DTR, target_id, 0, 0, data, AICE_LITTLE_ENDIAN);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMC,
                                AICE_FORMAT_DTHMB);
@@ -797,9 +804,9 @@ int aice_write_dtr(uint8_t target_id, uint32_t data)
 
                LOG_DEBUG("WRITE_DTR, COREID: %" PRIu8 ", data: 0x%" PRIx32, target_id, data);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")", AICE_FORMAT_DTHMB, result);
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)", AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
 
@@ -813,7 +820,7 @@ int aice_write_dtr(uint8_t target_id, uint32_t data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_WRITE_DTR, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -830,14 +837,13 @@ int aice_write_dtr(uint8_t target_id, uint32_t data)
        return ERROR_OK;
 }
 
-int aice_write_dtr_from_buffer(uint8_t target_id, uint32_t buffer_idx)
+static int aice_write_dtr_from_buffer(uint8_t target_id, uint32_t buffer_idx)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdma(AICE_CMD_WRITE_DTR_FROM_BUFFER, target_id, 0, buffer_idx);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMA,
                                AICE_FORMAT_DTHMB);
@@ -850,9 +856,9 @@ int aice_write_dtr_from_buffer(uint8_t target_id, uint32_t buffer_idx)
 
                LOG_DEBUG("WRITE_DTR_FROM_BUFFER, COREID: %" PRIu8 "", target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")", AICE_FORMAT_DTHMB, result);
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)", AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
 
@@ -865,7 +871,7 @@ int aice_write_dtr_from_buffer(uint8_t target_id, uint32_t buffer_idx)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_WRITE_DTR_FROM_BUFFER, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -882,13 +888,12 @@ int aice_write_dtr_from_buffer(uint8_t target_id, uint32_t buffer_idx)
        return ERROR_OK;
 }
 
-int aice_read_misc(uint8_t target_id, uint32_t address, uint32_t *data)
+static int aice_read_misc(uint8_t target_id, uint32_t address, uint32_t *data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -898,9 +903,9 @@ int aice_read_misc(uint8_t target_id, uint32_t address, uint32_t *data)
 
                LOG_DEBUG("READ_MISC, COREID: %" PRIu8 ", address: 0x%" PRIx32, target_id, address);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
-               if (AICE_FORMAT_DTHMA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
+               if (result != AICE_FORMAT_DTHMA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMA, result);
                        return ERROR_AICE_DISCONNECT;
                }
@@ -916,7 +921,7 @@ int aice_read_misc(uint8_t target_id, uint32_t address, uint32_t *data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_READ_MISC, cmd_ack_code);
                                return ERROR_FAIL;
                        }
@@ -932,14 +937,13 @@ int aice_read_misc(uint8_t target_id, uint32_t address, uint32_t *data)
        return ERROR_OK;
 }
 
-int aice_write_misc(uint8_t target_id, uint32_t address, uint32_t data)
+static int aice_write_misc(uint8_t target_id, uint32_t address, uint32_t data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdmc(AICE_CMD_T_WRITE_MISC, target_id, 0, address, data,
                                AICE_LITTLE_ENDIAN);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMC,
@@ -955,9 +959,9 @@ int aice_write_misc(uint8_t target_id, uint32_t address, uint32_t data)
                LOG_DEBUG("WRITE_MISC, COREID: %" PRIu8 ", address: 0x%" PRIx32 ", data: 0x%" PRIx32,
                                target_id, address, data);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
@@ -972,7 +976,7 @@ int aice_write_misc(uint8_t target_id, uint32_t address, uint32_t data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_WRITE_MISC, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -989,13 +993,12 @@ int aice_write_misc(uint8_t target_id, uint32_t address, uint32_t data)
        return ERROR_OK;
 }
 
-int aice_read_edmsr(uint8_t target_id, uint32_t address, uint32_t *data)
+static int aice_read_edmsr(uint8_t target_id, uint32_t address, uint32_t *data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -1005,9 +1008,9 @@ int aice_read_edmsr(uint8_t target_id, uint32_t address, uint32_t *data)
 
                LOG_DEBUG("READ_EDMSR, COREID: %" PRIu8 ", address: 0x%" PRIx32, target_id, address);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
-               if (AICE_FORMAT_DTHMA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
+               if (result != AICE_FORMAT_DTHMA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMA, result);
                        return ERROR_FAIL;
                }
@@ -1023,7 +1026,7 @@ int aice_read_edmsr(uint8_t target_id, uint32_t address, uint32_t *data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_READ_EDMSR, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1040,14 +1043,13 @@ int aice_read_edmsr(uint8_t target_id, uint32_t address, uint32_t *data)
        return ERROR_OK;
 }
 
-int aice_write_edmsr(uint8_t target_id, uint32_t address, uint32_t data)
+static int aice_write_edmsr(uint8_t target_id, uint32_t address, uint32_t data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdmc(AICE_CMD_T_WRITE_EDMSR, target_id, 0, address, data,
                                AICE_LITTLE_ENDIAN);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMC,
@@ -1063,9 +1065,9 @@ int aice_write_edmsr(uint8_t target_id, uint32_t address, uint32_t data)
                LOG_DEBUG("WRITE_EDMSR, COREID: %" PRIu8 ", address: 0x%" PRIx32 ", data: 0x%" PRIx32,
                                target_id, address, data);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
@@ -1080,7 +1082,7 @@ int aice_write_edmsr(uint8_t target_id, uint32_t address, uint32_t data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_WRITE_EDMSR, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1114,7 +1116,6 @@ static int aice_switch_to_big_endian(uint32_t *word, uint8_t num_of_words)
 
 static int aice_write_dim(uint8_t target_id, uint32_t *word, uint8_t num_of_words)
 {
-       int32_t result;
        uint32_t big_endian_word[4];
        int retry_times = 0;
 
@@ -1122,9 +1123,9 @@ static int aice_write_dim(uint8_t target_id, uint32_t *word, uint8_t num_of_word
        memcpy(big_endian_word, word, sizeof(big_endian_word));
        aice_switch_to_big_endian(big_endian_word, num_of_words);
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdmc_multiple_data(AICE_CMD_T_WRITE_DIM, target_id,
                                num_of_words - 1, 0, big_endian_word, num_of_words,
                                AICE_LITTLE_ENDIAN);
@@ -1147,9 +1148,9 @@ static int aice_write_dim(uint8_t target_id, uint32_t *word, uint8_t num_of_word
                                big_endian_word[2],
                                big_endian_word[3]);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")", AICE_FORMAT_DTHMB, result);
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)", AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
 
@@ -1164,8 +1165,7 @@ static int aice_write_dim(uint8_t target_id, uint32_t *word, uint8_t num_of_word
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8
-                                               ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_WRITE_DIM, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1184,12 +1184,11 @@ static int aice_write_dim(uint8_t target_id, uint32_t *word, uint8_t num_of_word
 
 static int aice_do_execute(uint8_t target_id)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdmc(AICE_CMD_T_EXECUTE, target_id, 0, 0, 0, AICE_LITTLE_ENDIAN);
                return aice_usb_packet_append(usb_out_buffer,
                                AICE_FORMAT_HTDMC,
@@ -1203,9 +1202,9 @@ static int aice_do_execute(uint8_t target_id)
 
                LOG_DEBUG("EXECUTE, COREID: %" PRIu8 "", target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
@@ -1220,7 +1219,7 @@ static int aice_do_execute(uint8_t target_id)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_EXECUTE, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1237,9 +1236,8 @@ static int aice_do_execute(uint8_t target_id)
        return ERROR_OK;
 }
 
-int aice_write_mem_b(uint8_t target_id, uint32_t address, uint32_t data)
+static int aice_write_mem_b(uint8_t target_id, uint32_t address, uint32_t data)
 {
-       int32_t result;
        int retry_times = 0;
 
        LOG_DEBUG("WRITE_MEM_B, COREID: %" PRIu8 ", ADDRESS %08" PRIx32 "  VALUE %08" PRIx32,
@@ -1247,8 +1245,8 @@ int aice_write_mem_b(uint8_t target_id, uint32_t address, uint32_t data)
                        address,
                        data);
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode)) {
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH)) {
                aice_pack_htdmd(AICE_CMD_T_WRITE_MEM_B, target_id, 0, address,
                                data & 0x000000FF, data_endian);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMD,
@@ -1259,10 +1257,9 @@ int aice_write_mem_b(uint8_t target_id, uint32_t address, uint32_t data)
                                        address, data & 0x000000FF, data_endian);
                        aice_usb_write(usb_out_buffer, AICE_FORMAT_HTDMD);
 
-                       result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-                       if (AICE_FORMAT_DTHMB != result) {
-                               LOG_ERROR("aice_usb_read failed (requested=%" PRId32
-                                               ", result=%" PRId32 ")", AICE_FORMAT_DTHMB, result);
+                       int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+                       if (result != AICE_FORMAT_DTHMB) {
+                               LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)", AICE_FORMAT_DTHMB, result);
                                return ERROR_FAIL;
                        }
 
@@ -1275,7 +1272,7 @@ int aice_write_mem_b(uint8_t target_id, uint32_t address, uint32_t data)
                                break;
                        } else {
                                if (retry_times > aice_max_retry_times) {
-                                       LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                                       LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                        AICE_CMD_T_WRITE_MEM_B, cmd_ack_code);
 
                                        return ERROR_FAIL;
@@ -1293,9 +1290,8 @@ int aice_write_mem_b(uint8_t target_id, uint32_t address, uint32_t data)
        return ERROR_OK;
 }
 
-int aice_write_mem_h(uint8_t target_id, uint32_t address, uint32_t data)
+static int aice_write_mem_h(uint8_t target_id, uint32_t address, uint32_t data)
 {
-       int32_t result;
        int retry_times = 0;
 
        LOG_DEBUG("WRITE_MEM_H, COREID: %" PRIu8 ", ADDRESS %08" PRIx32 "  VALUE %08" PRIx32,
@@ -1303,8 +1299,8 @@ int aice_write_mem_h(uint8_t target_id, uint32_t address, uint32_t data)
                        address,
                        data);
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode)) {
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH)) {
                aice_pack_htdmd(AICE_CMD_T_WRITE_MEM_H, target_id, 0,
                                (address >> 1) & 0x7FFFFFFF, data & 0x0000FFFF, data_endian);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMD,
@@ -1315,9 +1311,9 @@ int aice_write_mem_h(uint8_t target_id, uint32_t address, uint32_t data)
                                        (address >> 1) & 0x7FFFFFFF, data & 0x0000FFFF, data_endian);
                        aice_usb_write(usb_out_buffer, AICE_FORMAT_HTDMD);
 
-                       result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-                       if (AICE_FORMAT_DTHMB != result) {
-                               LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+                       int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+                       if (result != AICE_FORMAT_DTHMB) {
+                               LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                                AICE_FORMAT_DTHMB, result);
                                return ERROR_FAIL;
                        }
@@ -1331,7 +1327,7 @@ int aice_write_mem_h(uint8_t target_id, uint32_t address, uint32_t data)
                                break;
                        } else {
                                if (retry_times > aice_max_retry_times) {
-                                       LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                                       LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                        AICE_CMD_T_WRITE_MEM_H, cmd_ack_code);
 
                                        return ERROR_FAIL;
@@ -1349,9 +1345,8 @@ int aice_write_mem_h(uint8_t target_id, uint32_t address, uint32_t data)
        return ERROR_OK;
 }
 
-int aice_write_mem(uint8_t target_id, uint32_t address, uint32_t data)
+static int aice_write_mem(uint8_t target_id, uint32_t address, uint32_t data)
 {
-       int32_t result;
        int retry_times = 0;
 
        LOG_DEBUG("WRITE_MEM, COREID: %" PRIu8 ", ADDRESS %08" PRIx32 "  VALUE %08" PRIx32,
@@ -1359,8 +1354,8 @@ int aice_write_mem(uint8_t target_id, uint32_t address, uint32_t data)
                        address,
                        data);
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode)) {
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH)) {
                aice_pack_htdmd(AICE_CMD_T_WRITE_MEM, target_id, 0,
                                (address >> 2) & 0x3FFFFFFF, data, data_endian);
                return aice_usb_packet_append(usb_out_buffer, AICE_FORMAT_HTDMD,
@@ -1371,9 +1366,9 @@ int aice_write_mem(uint8_t target_id, uint32_t address, uint32_t data)
                                        (address >> 2) & 0x3FFFFFFF, data, data_endian);
                        aice_usb_write(usb_out_buffer, AICE_FORMAT_HTDMD);
 
-                       result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-                       if (AICE_FORMAT_DTHMB != result) {
-                               LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+                       int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+                       if (result != AICE_FORMAT_DTHMB) {
+                               LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                                AICE_FORMAT_DTHMB, result);
                                return ERROR_FAIL;
                        }
@@ -1387,7 +1382,7 @@ int aice_write_mem(uint8_t target_id, uint32_t address, uint32_t data)
                                break;
                        } else {
                                if (retry_times > aice_max_retry_times) {
-                                       LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                                       LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                        AICE_CMD_T_WRITE_MEM, cmd_ack_code);
 
                                        return ERROR_FAIL;
@@ -1405,13 +1400,12 @@ int aice_write_mem(uint8_t target_id, uint32_t address, uint32_t data)
        return ERROR_OK;
 }
 
-int aice_fastread_mem(uint8_t target_id, uint8_t *word, uint32_t num_of_words)
+static int aice_fastread_mem(uint8_t target_id, uint8_t *word, uint32_t num_of_words)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -1422,9 +1416,9 @@ int aice_fastread_mem(uint8_t target_id, uint8_t *word, uint32_t num_of_words)
                LOG_DEBUG("FASTREAD_MEM, COREID: %" PRIu8 ", # of DATA %08" PRIx32,
                                target_id, num_of_words);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA + (num_of_words - 1) * 4);
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA + (num_of_words - 1) * 4);
                if (result < 0) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+                       LOG_ERROR("aice_usb_read failed (requested=%" PRIu32 ", result=%d)",
                                        AICE_FORMAT_DTHMA + (num_of_words - 1) * 4, result);
                        return ERROR_FAIL;
                }
@@ -1439,7 +1433,7 @@ int aice_fastread_mem(uint8_t target_id, uint8_t *word, uint32_t num_of_words)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_FASTREAD_MEM, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1456,14 +1450,13 @@ int aice_fastread_mem(uint8_t target_id, uint8_t *word, uint32_t num_of_words)
        return ERROR_OK;
 }
 
-int aice_fastwrite_mem(uint8_t target_id, const uint8_t *word, uint32_t num_of_words)
+static int aice_fastwrite_mem(uint8_t target_id, const uint8_t *word, uint32_t num_of_words)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if (AICE_COMMAND_MODE_PACK == aice_command_mode) {
+       if (aice_command_mode == AICE_COMMAND_MODE_PACK) {
                aice_usb_packet_flush();
-       } else if (AICE_COMMAND_MODE_BATCH == aice_command_mode) {
+       } else if (aice_command_mode == AICE_COMMAND_MODE_BATCH) {
                aice_pack_htdmd_multiple_data(AICE_CMD_T_FASTWRITE_MEM, target_id,
                                num_of_words - 1, 0, word, data_endian);
                return aice_usb_packet_append(usb_out_buffer,
@@ -1480,9 +1473,9 @@ int aice_fastwrite_mem(uint8_t target_id, const uint8_t *word, uint32_t num_of_w
                LOG_DEBUG("FASTWRITE_MEM, COREID: %" PRIu8 ", # of DATA %08" PRIx32,
                                target_id, num_of_words);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
@@ -1496,7 +1489,7 @@ int aice_fastwrite_mem(uint8_t target_id, const uint8_t *word, uint32_t num_of_w
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_FASTWRITE_MEM, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1513,13 +1506,12 @@ int aice_fastwrite_mem(uint8_t target_id, const uint8_t *word, uint32_t num_of_w
        return ERROR_OK;
 }
 
-int aice_read_mem_b(uint8_t target_id, uint32_t address, uint32_t *data)
+static int aice_read_mem_b(uint8_t target_id, uint32_t address, uint32_t *data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -1529,9 +1521,9 @@ int aice_read_mem_b(uint8_t target_id, uint32_t address, uint32_t *data)
 
                LOG_DEBUG("READ_MEM_B, COREID: %" PRIu8 "", target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
-               if (AICE_FORMAT_DTHMA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
+               if (result != AICE_FORMAT_DTHMA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMA, result);
                        return ERROR_FAIL;
                }
@@ -1547,7 +1539,7 @@ int aice_read_mem_b(uint8_t target_id, uint32_t address, uint32_t *data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_READ_MEM_B, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1564,13 +1556,12 @@ int aice_read_mem_b(uint8_t target_id, uint32_t address, uint32_t *data)
        return ERROR_OK;
 }
 
-int aice_read_mem_h(uint8_t target_id, uint32_t address, uint32_t *data)
+static int aice_read_mem_h(uint8_t target_id, uint32_t address, uint32_t *data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -1580,9 +1571,9 @@ int aice_read_mem_h(uint8_t target_id, uint32_t address, uint32_t *data)
 
                LOG_DEBUG("READ_MEM_H, CORE_ID: %" PRIu8 "", target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
-               if (AICE_FORMAT_DTHMA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
+               if (result != AICE_FORMAT_DTHMA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMA, result);
                        return ERROR_FAIL;
                }
@@ -1598,7 +1589,7 @@ int aice_read_mem_h(uint8_t target_id, uint32_t address, uint32_t *data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_READ_MEM_H, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1615,13 +1606,12 @@ int aice_read_mem_h(uint8_t target_id, uint32_t address, uint32_t *data)
        return ERROR_OK;
 }
 
-int aice_read_mem(uint8_t target_id, uint32_t address, uint32_t *data)
+static int aice_read_mem(uint8_t target_id, uint32_t address, uint32_t *data)
 {
-       int32_t result;
        int retry_times = 0;
 
-       if ((AICE_COMMAND_MODE_PACK == aice_command_mode) ||
-               (AICE_COMMAND_MODE_BATCH == aice_command_mode))
+       if ((aice_command_mode == AICE_COMMAND_MODE_PACK) ||
+               (aice_command_mode == AICE_COMMAND_MODE_BATCH))
                aice_usb_packet_flush();
 
        do {
@@ -1632,9 +1622,9 @@ int aice_read_mem(uint8_t target_id, uint32_t address, uint32_t *data)
 
                LOG_DEBUG("READ_MEM, COREID: %" PRIu8 "", target_id);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
-               if (AICE_FORMAT_DTHMA != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA);
+               if (result != AICE_FORMAT_DTHMA) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMA, result);
                        return ERROR_FAIL;
                }
@@ -1650,7 +1640,7 @@ int aice_read_mem(uint8_t target_id, uint32_t address, uint32_t *data)
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_T_READ_MEM, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1667,9 +1657,8 @@ int aice_read_mem(uint8_t target_id, uint32_t address, uint32_t *data)
        return ERROR_OK;
 }
 
-int aice_batch_buffer_read(uint8_t buf_index, uint32_t *word, uint32_t num_of_words)
+static int aice_batch_buffer_read(uint8_t buf_index, uint32_t *word, uint32_t num_of_words)
 {
-       int32_t result;
        int retry_times = 0;
 
        do {
@@ -1679,9 +1668,9 @@ int aice_batch_buffer_read(uint8_t buf_index, uint32_t *word, uint32_t num_of_wo
 
                LOG_DEBUG("BATCH_BUFFER_READ, # of DATA %08" PRIx32, num_of_words);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA + (num_of_words - 1) * 4);
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMA + (num_of_words - 1) * 4);
                if (result < 0) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+                       LOG_ERROR("aice_usb_read failed (requested=%" PRIu32 ", result=%d)",
                                        AICE_FORMAT_DTHMA + (num_of_words - 1) * 4, result);
                        return ERROR_FAIL;
                }
@@ -1696,7 +1685,7 @@ int aice_batch_buffer_read(uint8_t buf_index, uint32_t *word, uint32_t num_of_wo
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_BATCH_BUFFER_READ, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1715,7 +1704,6 @@ int aice_batch_buffer_read(uint8_t buf_index, uint32_t *word, uint32_t num_of_wo
 
 int aice_batch_buffer_write(uint8_t buf_index, const uint8_t *word, uint32_t num_of_words)
 {
-       int32_t result;
        int retry_times = 0;
 
        if (num_of_words == 0)
@@ -1733,9 +1721,9 @@ int aice_batch_buffer_write(uint8_t buf_index, const uint8_t *word, uint32_t num
 
                LOG_DEBUG("BATCH_BUFFER_WRITE, # of DATA %08" PRIx32, num_of_words);
 
-               result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
-               if (AICE_FORMAT_DTHMB != result) {
-                       LOG_ERROR("aice_usb_read failed (requested=%" PRId32 ", result=%" PRId32 ")",
+               int result = aice_usb_read(usb_in_buffer, AICE_FORMAT_DTHMB);
+               if (result != AICE_FORMAT_DTHMB) {
+                       LOG_ERROR("aice_usb_read failed (requested=%d, result=%d)",
                                        AICE_FORMAT_DTHMB, result);
                        return ERROR_FAIL;
                }
@@ -1749,7 +1737,7 @@ int aice_batch_buffer_write(uint8_t buf_index, const uint8_t *word, uint32_t num
                        break;
                } else {
                        if (retry_times > aice_max_retry_times) {
-                               LOG_ERROR("aice command timeout (command=0x%" PRIx8 ", response=0x%" PRIx8 ")",
+                               LOG_ERROR("aice command timeout (command=0x%x, response=0x%" PRIx8 ")",
                                                AICE_CMD_BATCH_BUFFER_WRITE, cmd_ack_code);
 
                                return ERROR_FAIL;
@@ -1772,7 +1760,7 @@ int aice_batch_buffer_write(uint8_t buf_index, const uint8_t *word, uint32_t num
 typedef int (*read_mem_func_t)(uint32_t coreid, uint32_t address, uint32_t *data);
 typedef int (*write_mem_func_t)(uint32_t coreid, uint32_t address, uint32_t data);
 
-struct aice_nds32_info core_info[AICE_MAX_NUM_CORE];
+static struct aice_nds32_info core_info[AICE_MAX_NUM_CORE];
 static uint8_t total_num_of_core;
 
 static char *custom_srst_script;
@@ -1785,8 +1773,8 @@ static int aice_write_reg(uint32_t coreid, uint32_t num, uint32_t val);
 
 static int check_suppressed_exception(uint32_t coreid, uint32_t dbger_value)
 {
-       uint32_t ir4_value;
-       uint32_t ir6_value;
+       uint32_t ir4_value = 0;
+       uint32_t ir6_value = 0;
        /* the default value of handling_suppressed_exception is false */
        static bool handling_suppressed_exception;
 
@@ -1840,15 +1828,15 @@ static int check_privilege(uint32_t coreid, uint32_t dbger_value)
 static int aice_check_dbger(uint32_t coreid, uint32_t expect_status)
 {
        uint32_t i = 0;
-       uint32_t value_dbger;
+       uint32_t value_dbger = 0;
 
        while (1) {
                aice_read_misc(coreid, NDS_EDM_MISC_DBGER, &value_dbger);
 
                if ((value_dbger & expect_status) == expect_status) {
-                       if (ERROR_OK != check_suppressed_exception(coreid, value_dbger))
+                       if (check_suppressed_exception(coreid, value_dbger) != ERROR_OK)
                                return ERROR_FAIL;
-                       if (ERROR_OK != check_privilege(coreid, value_dbger))
+                       if (check_privilege(coreid, value_dbger) != ERROR_OK)
                                return ERROR_FAIL;
                        return ERROR_OK;
                }
@@ -1906,18 +1894,18 @@ static int aice_read_reg(uint32_t coreid, uint32_t num, uint32_t *val)
 
        uint32_t instructions[4]; /** execute instructions in DIM */
 
-       if (NDS32_REG_TYPE_GPR == nds32_reg_type(num)) { /* general registers */
+       if (nds32_reg_type(num) == NDS32_REG_TYPE_GPR) { /* general registers */
                instructions[0] = MTSR_DTR(num);
                instructions[1] = DSB;
                instructions[2] = NOP;
                instructions[3] = BEQ_MINUS_12;
-       } else if (NDS32_REG_TYPE_SPR == nds32_reg_type(num)) { /* user special registers */
+       } else if (nds32_reg_type(num) == NDS32_REG_TYPE_SPR) { /* user special registers */
                instructions[0] = MFUSR_G0(0, nds32_reg_sr_index(num));
                instructions[1] = MTSR_DTR(0);
                instructions[2] = DSB;
                instructions[3] = BEQ_MINUS_12;
-       } else if (NDS32_REG_TYPE_AUMR == nds32_reg_type(num)) { /* audio registers */
-               if ((CB_CTL <= num) && (num <= CBE3)) {
+       } else if (nds32_reg_type(num) == NDS32_REG_TYPE_AUMR) { /* audio registers */
+               if ((num >= CB_CTL) && (num <= CBE3)) {
                        instructions[0] = AMFAR2(0, nds32_reg_sr_index(num));
                        instructions[1] = MTSR_DTR(0);
                        instructions[2] = DSB;
@@ -1928,24 +1916,24 @@ static int aice_read_reg(uint32_t coreid, uint32_t num, uint32_t *val)
                        instructions[2] = DSB;
                        instructions[3] = BEQ_MINUS_12;
                }
-       } else if (NDS32_REG_TYPE_FPU == nds32_reg_type(num)) { /* fpu registers */
-               if (FPCSR == num) {
+       } else if (nds32_reg_type(num) == NDS32_REG_TYPE_FPU) { /* fpu registers */
+               if (num == FPCSR) {
                        instructions[0] = FMFCSR;
                        instructions[1] = MTSR_DTR(0);
                        instructions[2] = DSB;
                        instructions[3] = BEQ_MINUS_12;
-               } else if (FPCFG == num) {
+               } else if (num == FPCFG) {
                        instructions[0] = FMFCFG;
                        instructions[1] = MTSR_DTR(0);
                        instructions[2] = DSB;
                        instructions[3] = BEQ_MINUS_12;
                } else {
-                       if (FS0 <= num && num <= FS31) { /* single precision */
+                       if (num >= FS0 && num <= FS31) { /* single precision */
                                instructions[0] = FMFSR(0, nds32_reg_sr_index(num));
                                instructions[1] = MTSR_DTR(0);
                                instructions[2] = DSB;
                                instructions[3] = BEQ_MINUS_12;
-                       } else if (FD0 <= num && num <= FD31) { /* double precision */
+                       } else if (num >= FD0 && num <= FD31) { /* double precision */
                                instructions[0] = FMFDR(0, nds32_reg_sr_index(num));
                                instructions[1] = MTSR_DTR(0);
                                instructions[2] = DSB;
@@ -1961,7 +1949,7 @@ static int aice_read_reg(uint32_t coreid, uint32_t num, uint32_t *val)
 
        aice_execute_dim(coreid, instructions, 4);
 
-       uint32_t value_edmsw;
+       uint32_t value_edmsw = 0;
        aice_read_edmsr(coreid, NDS_EDM_SR_EDMSW, &value_edmsw);
        if (value_edmsw & NDS_EDMSW_WDV)
                aice_read_dtr(coreid, val);
@@ -1994,7 +1982,7 @@ static int aice_usb_read_reg(uint32_t coreid, uint32_t num, uint32_t *val)
        } else if ((core_info[coreid].target_dtr_valid == true) && (num == DR43)) {
                *val = core_info[coreid].target_dtr_backup;
        } else {
-               if (ERROR_OK != aice_read_reg(coreid, num, val))
+               if (aice_read_reg(coreid, num, val) != ERROR_OK)
                        *val = 0xBBADBEEF;
        }
 
@@ -2006,7 +1994,7 @@ static int aice_write_reg(uint32_t coreid, uint32_t num, uint32_t val)
        LOG_DEBUG("aice_write_reg, reg_no: 0x%08" PRIx32 ", value: 0x%08" PRIx32, num, val);
 
        uint32_t instructions[4]; /** execute instructions in DIM */
-       uint32_t value_edmsw;
+       uint32_t value_edmsw = 0;
 
        aice_write_dtr(coreid, val);
        aice_read_edmsr(coreid, NDS_EDM_SR_EDMSW, &value_edmsw);
@@ -2015,18 +2003,18 @@ static int aice_write_reg(uint32_t coreid, uint32_t num, uint32_t val)
                return ERROR_FAIL;
        }
 
-       if (NDS32_REG_TYPE_GPR == nds32_reg_type(num)) { /* general registers */
+       if (nds32_reg_type(num) == NDS32_REG_TYPE_GPR) { /* general registers */
                instructions[0] = MFSR_DTR(num);
                instructions[1] = DSB;
                instructions[2] = NOP;
                instructions[3] = BEQ_MINUS_12;
-       } else if (NDS32_REG_TYPE_SPR == nds32_reg_type(num)) { /* user special registers */
+       } else if (nds32_reg_type(num) == NDS32_REG_TYPE_SPR) { /* user special registers */
                instructions[0] = MFSR_DTR(0);
                instructions[1] = MTUSR_G0(0, nds32_reg_sr_index(num));
                instructions[2] = DSB;
                instructions[3] = BEQ_MINUS_12;
-       } else if (NDS32_REG_TYPE_AUMR == nds32_reg_type(num)) { /* audio registers */
-               if ((CB_CTL <= num) && (num <= CBE3)) {
+       } else if (nds32_reg_type(num) == NDS32_REG_TYPE_AUMR) { /* audio registers */
+               if ((num >= CB_CTL) && (num <= CBE3)) {
                        instructions[0] = MFSR_DTR(0);
                        instructions[1] = AMTAR2(0, nds32_reg_sr_index(num));
                        instructions[2] = DSB;
@@ -2037,21 +2025,21 @@ static int aice_write_reg(uint32_t coreid, uint32_t num, uint32_t val)
                        instructions[2] = DSB;
                        instructions[3] = BEQ_MINUS_12;
                }
-       } else if (NDS32_REG_TYPE_FPU == nds32_reg_type(num)) { /* fpu registers */
-               if (FPCSR == num) {
+       } else if (nds32_reg_type(num) == NDS32_REG_TYPE_FPU) { /* fpu registers */
+               if (num == FPCSR) {
                        instructions[0] = MFSR_DTR(0);
                        instructions[1] = FMTCSR;
                        instructions[2] = DSB;
                        instructions[3] = BEQ_MINUS_12;
-               } else if (FPCFG == num) {
+               } else if (num == FPCFG) {
                        /* FPCFG is readonly */
                } else {
-                       if (FS0 <= num && num <= FS31) { /* single precision */
+                       if (num >= FS0 && num <= FS31) { /* single precision */
                                instructions[0] = MFSR_DTR(0);
                                instructions[1] = FMTSR(0, nds32_reg_sr_index(num));
                                instructions[2] = DSB;
                                instructions[3] = BEQ_MINUS_12;
-                       } else if (FD0 <= num && num <= FD31) { /* double precision */
+                       } else if (num >= FD0 && num <= FD31) { /* double precision */
                                instructions[0] = MFSR_DTR(0);
                                instructions[1] = FMTDR(0, nds32_reg_sr_index(num));
                                instructions[2] = DSB;
@@ -2095,9 +2083,9 @@ static int aice_usb_open(struct aice_port_param_s *param)
 {
        const uint16_t vids[] = { param->vid, 0 };
        const uint16_t pids[] = { param->pid, 0 };
-       struct jtag_libusb_device_handle *devh;
+       struct libusb_device_handle *devh;
 
-       if (jtag_libusb_open(vids, pids, NULL, &devh) != ERROR_OK)
+       if (jtag_libusb_open(vids, pids, &devh, NULL) != ERROR_OK)
                return ERROR_FAIL;
 
        /* BE ***VERY CAREFUL*** ABOUT MAKING CHANGES IN THIS
@@ -2113,7 +2101,7 @@ static int aice_usb_open(struct aice_port_param_s *param)
 
 #if IS_WIN32 == 0
 
-       jtag_libusb_reset_device(devh);
+       libusb_reset_device(devh);
 
 #if IS_DARWIN == 0
 
@@ -2121,29 +2109,26 @@ static int aice_usb_open(struct aice_port_param_s *param)
        /* reopen jlink after usb_reset
         * on win32 this may take a second or two to re-enumerate */
        int retval;
-       while ((retval = jtag_libusb_open(vids, pids, NULL, &devh)) != ERROR_OK) {
+       while ((retval = jtag_libusb_open(vids, pids, &devh, NULL)) != ERROR_OK) {
                usleep(1000);
                timeout--;
                if (!timeout)
                        break;
        }
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return ERROR_FAIL;
 #endif
 
 #endif
 
        /* usb_set_configuration required under win32 */
-       jtag_libusb_set_configuration(devh, 0);
-       jtag_libusb_claim_interface(devh, 0);
+       libusb_set_configuration(devh, 0);
+       libusb_claim_interface(devh, 0);
 
        unsigned int aice_read_ep;
        unsigned int aice_write_ep;
-#ifdef HAVE_LIBUSB1
+
        jtag_libusb_choose_interface(devh, &aice_read_ep, &aice_write_ep, -1, -1, -1, LIBUSB_TRANSFER_TYPE_BULK);
-#else
-       jtag_libusb_choose_interface(devh, &aice_read_ep, &aice_write_ep, -1, -1, -1, USB_ENDPOINT_TYPE_BULK);
-#endif
        LOG_DEBUG("aice_read_ep=0x%x, aice_write_ep=0x%x", aice_read_ep, aice_write_ep);
 
        aice_handler.usb_read_ep = aice_read_ep;
@@ -2160,7 +2145,7 @@ static int aice_usb_read_reg_64(uint32_t coreid, uint32_t num, uint64_t *val)
        uint32_t value;
        uint32_t high_value;
 
-       if (ERROR_OK != aice_read_reg(coreid, num, &value))
+       if (aice_read_reg(coreid, num, &value) != ERROR_OK)
                value = 0xBBADBEEF;
 
        aice_read_reg(coreid, R1, &high_value);
@@ -2229,24 +2214,24 @@ static int aice_execute_custom_script(const char *script)
        bool set_op;
 
        script_fd = fopen(script, "r");
-       if (script_fd == NULL) {
+       if (!script_fd) {
                return ERROR_FAIL;
        } else {
-               while (fgets(line_buffer, LINE_BUFFER_SIZE, script_fd) != NULL) {
+               while (fgets(line_buffer, LINE_BUFFER_SIZE, script_fd)) {
                        /* execute operations */
                        set_op = false;
                        op_str = strstr(line_buffer, "set");
-                       if (op_str != NULL) {
+                       if (op_str) {
                                set_op = true;
                                goto get_reset_type;
                        }
 
                        op_str = strstr(line_buffer, "clear");
-                       if (op_str == NULL)
+                       if (!op_str)
                                continue;
 get_reset_type:
                        reset_str = strstr(op_str, "srst");
-                       if (reset_str != NULL) {
+                       if (reset_str) {
                                if (set_op)
                                        write_ctrl_value = AICE_CUSTOM_DELAY_SET_SRST;
                                else
@@ -2254,7 +2239,7 @@ get_reset_type:
                                goto get_delay;
                        }
                        reset_str = strstr(op_str, "dbgi");
-                       if (reset_str != NULL) {
+                       if (reset_str) {
                                if (set_op)
                                        write_ctrl_value = AICE_CUSTOM_DELAY_SET_DBGI;
                                else
@@ -2262,7 +2247,7 @@ get_reset_type:
                                goto get_delay;
                        }
                        reset_str = strstr(op_str, "trst");
-                       if (reset_str != NULL) {
+                       if (reset_str) {
                                if (set_op)
                                        write_ctrl_value = AICE_CUSTOM_DELAY_SET_TRST;
                                else
@@ -2438,7 +2423,7 @@ static int aice_backup_tmp_registers(uint32_t coreid)
        LOG_DEBUG("backup_tmp_registers -");
 
        /* backup target DTR first(if the target DTR is valid) */
-       uint32_t value_edmsw;
+       uint32_t value_edmsw = 0;
        aice_read_edmsr(coreid, NDS_EDM_SR_EDMSW, &value_edmsw);
        core_info[coreid].edmsw_backup = value_edmsw;
        if (value_edmsw & 0x1) { /* EDMSW.WDV == 1 */
@@ -2517,10 +2502,10 @@ static int aice_restore_tmp_registers(uint32_t coreid)
 
 static int aice_open_device(struct aice_port_param_s *param)
 {
-       if (ERROR_OK != aice_usb_open(param))
+       if (aice_usb_open(param) != ERROR_OK)
                return ERROR_FAIL;
 
-       if (ERROR_FAIL == aice_get_version_info()) {
+       if (aice_get_version_info() == ERROR_FAIL) {
                LOG_ERROR("Cannot get AICE version!");
                return ERROR_FAIL;
        }
@@ -2528,7 +2513,7 @@ static int aice_open_device(struct aice_port_param_s *param)
        LOG_INFO("AICE initialization started");
 
        /* attempt to reset Andes EDM */
-       if (ERROR_FAIL == aice_reset_box()) {
+       if (aice_reset_box() == ERROR_FAIL) {
                LOG_ERROR("Cannot initial AICE box!");
                return ERROR_FAIL;
        }
@@ -2540,7 +2525,7 @@ static int aice_usb_set_jtag_clock(uint32_t a_clock)
 {
        jtag_clock = a_clock;
 
-       if (ERROR_OK != aice_usb_set_clock(a_clock)) {
+       if (aice_usb_set_clock(a_clock) != ERROR_OK) {
                LOG_ERROR("Cannot set AICE JTAG clock!");
                return ERROR_FAIL;
        }
@@ -2552,15 +2537,9 @@ static int aice_usb_close(void)
 {
        jtag_libusb_close(aice_handler.usb_handle);
 
-       if (custom_srst_script)
-               free(custom_srst_script);
-
-       if (custom_trst_script)
-               free(custom_trst_script);
-
-       if (custom_restart_script)
-               free(custom_restart_script);
-
+       free(custom_srst_script);
+       free(custom_trst_script);
+       free(custom_restart_script);
        return ERROR_OK;
 }
 
@@ -2578,7 +2557,7 @@ static int aice_usb_idcode(uint32_t *idcode, uint8_t *num_of_idcode)
        int retval;
 
        retval = aice_scan_chain(idcode, num_of_idcode);
-       if (ERROR_OK == retval) {
+       if (retval == ERROR_OK) {
                for (int i = 0; i < *num_of_idcode; i++) {
                        aice_core_init(i);
                        aice_edm_init(i);
@@ -2605,13 +2584,13 @@ static int aice_usb_halt(uint32_t coreid)
        aice_init_edm_registers(coreid, false);
 
        /** Clear EDM_CTL.DBGIM & EDM_CTL.DBGACKM */
-       uint32_t edm_ctl_value;
+       uint32_t edm_ctl_value = 0;
        aice_read_edmsr(coreid, NDS_EDM_SR_EDM_CTL, &edm_ctl_value);
        if (edm_ctl_value & 0x3)
                aice_write_edmsr(coreid, NDS_EDM_SR_EDM_CTL, edm_ctl_value & ~(0x3));
 
-       uint32_t dbger;
-       uint32_t acc_ctl_value;
+       uint32_t dbger = 0;
+       uint32_t acc_ctl_value = 0;
 
        core_info[coreid].debug_under_dex_on = false;
        aice_read_misc(coreid, NDS_EDM_MISC_DBGER, &dbger);
@@ -2647,12 +2626,12 @@ static int aice_usb_halt(uint32_t coreid)
 
        if (core_info[coreid].debug_under_dex_on) {
                if (core_info[coreid].dex_use_psw_on == false) {
-                       /* under debug 'debug mode', force $psw to 'debug mode' bahavior */
+                       /* under debug 'debug mode', force $psw to 'debug mode' behavior */
                        /* !!!NOTICE!!! this is workaround for debug 'debug mode'.
                         * it is only for debugging 'debug exception handler' purpose.
                         * after openocd detaches from target, target behavior is
                         * undefined. */
-                       uint32_t ir0_value;
+                       uint32_t ir0_value = 0;
                        uint32_t debug_mode_ir0_value;
                        aice_read_reg(coreid, IR0, &ir0_value);
                        debug_mode_ir0_value = ir0_value | 0x408; /* turn on DEX, set POM = 1 */
@@ -2679,7 +2658,7 @@ static int aice_usb_state(uint32_t coreid, enum aice_target_state_s *state)
 
        int result = aice_read_misc(coreid, NDS_EDM_MISC_DBGER, &dbger_value);
 
-       if (ERROR_AICE_TIMEOUT == result) {
+       if (result == ERROR_AICE_TIMEOUT) {
                if (aice_read_ctrl(AICE_READ_CTRL_GET_ICE_STATE, &ice_state) != ERROR_OK) {
                        LOG_ERROR("<-- AICE ERROR! AICE is unplugged. -->");
                        return ERROR_FAIL;
@@ -2691,7 +2670,7 @@ static int aice_usb_state(uint32_t coreid, enum aice_target_state_s *state)
                } else {
                        return ERROR_FAIL;
                }
-       } else if (ERROR_AICE_DISCONNECT == result) {
+       } else if (result == ERROR_AICE_DISCONNECT) {
                LOG_ERROR("<-- AICE ERROR! AICE is unplugged. -->");
                return ERROR_FAIL;
        }
@@ -2725,7 +2704,7 @@ static int aice_usb_state(uint32_t coreid, enum aice_target_state_s *state)
                /* Clear CRST */
                aice_write_misc(coreid, NDS_EDM_MISC_DBGER, NDS_DBGER_CRST);
        } else if ((dbger_value & NDS_DBGER_DEX) == NDS_DBGER_DEX) {
-               if (AICE_TARGET_RUNNING == core_info[coreid].core_state) {
+               if (core_info[coreid].core_state == AICE_TARGET_RUNNING) {
                        /* enter debug mode, init EDM registers */
                        /* backup EDM registers */
                        aice_backup_edm_registers(coreid);
@@ -2733,7 +2712,7 @@ static int aice_usb_state(uint32_t coreid, enum aice_target_state_s *state)
                        aice_init_edm_registers(coreid, true);
                        aice_backup_tmp_registers(coreid);
                        core_info[coreid].core_state = AICE_TARGET_HALTED;
-               } else if (AICE_TARGET_UNKNOWN == core_info[coreid].core_state) {
+               } else if (core_info[coreid].core_state == AICE_TARGET_UNKNOWN) {
                        /* debug 'debug mode', use force debug to halt core */
                        aice_usb_halt(coreid);
                }
@@ -2752,7 +2731,7 @@ static int aice_usb_reset(void)
                return ERROR_FAIL;
 
        /* issue TRST */
-       if (custom_trst_script == NULL) {
+       if (!custom_trst_script) {
                if (aice_write_ctrl(AICE_WRITE_CTRL_JTAG_PIN_CONTROL,
                                        AICE_JTAG_PIN_CONTROL_TRST) != ERROR_OK)
                        return ERROR_FAIL;
@@ -2775,7 +2754,7 @@ static int aice_issue_srst(uint32_t coreid)
        /* After issuing srst, target will be running. So we need to restore EDM_CTL. */
        aice_restore_edm_registers(coreid);
 
-       if (custom_srst_script == NULL) {
+       if (!custom_srst_script) {
                if (aice_write_ctrl(AICE_WRITE_CTRL_JTAG_PIN_CONTROL,
                                        AICE_JTAG_PIN_CONTROL_SRST) != ERROR_OK)
                        return ERROR_FAIL;
@@ -2815,11 +2794,11 @@ static int aice_issue_reset_hold(uint32_t coreid)
        /* set no_dbgi_pin to 0 */
        uint32_t pin_status;
        aice_read_ctrl(AICE_READ_CTRL_GET_JTAG_PIN_STATUS, &pin_status);
-       if (pin_status | 0x4)
+       if (pin_status & 0x4)
                aice_write_ctrl(AICE_WRITE_CTRL_JTAG_PIN_STATUS, pin_status & (~0x4));
 
        /* issue restart */
-       if (custom_restart_script == NULL) {
+       if (!custom_restart_script) {
                if (aice_write_ctrl(AICE_WRITE_CTRL_JTAG_PIN_CONTROL,
                                        AICE_JTAG_PIN_CONTROL_RESTART) != ERROR_OK)
                        return ERROR_FAIL;
@@ -2839,7 +2818,7 @@ static int aice_issue_reset_hold(uint32_t coreid)
                aice_write_ctrl(AICE_WRITE_CTRL_JTAG_PIN_STATUS, pin_status | 0x4);
 
                /* issue restart again */
-               if (custom_restart_script == NULL) {
+               if (!custom_restart_script) {
                        if (aice_write_ctrl(AICE_WRITE_CTRL_JTAG_PIN_CONTROL,
                                                AICE_JTAG_PIN_CONTROL_RESTART) != ERROR_OK)
                                return ERROR_FAIL;
@@ -2897,7 +2876,7 @@ static int aice_issue_reset_hold_multi(void)
 
 static int aice_usb_assert_srst(uint32_t coreid, enum aice_srst_type_s srst)
 {
-       if ((AICE_SRST != srst) && (AICE_RESET_HOLD != srst))
+       if ((srst != AICE_SRST) && (srst != AICE_RESET_HOLD))
                return ERROR_FAIL;
 
        /* clear DBGER */
@@ -2906,10 +2885,10 @@ static int aice_usb_assert_srst(uint32_t coreid, enum aice_srst_type_s srst)
                return ERROR_FAIL;
 
        int result = ERROR_OK;
-       if (AICE_SRST == srst)
+       if (srst == AICE_SRST)
                result = aice_issue_srst(coreid);
        else {
-               if (1 == total_num_of_core)
+               if (total_num_of_core == 1)
                        result = aice_issue_reset_hold(coreid);
                else
                        result = aice_issue_reset_hold_multi();
@@ -2992,7 +2971,7 @@ static int aice_usb_step(uint32_t coreid)
                aice_write_reg(coreid, ir0_reg_num, ir0_value);
        }
 
-       if (ERROR_FAIL == aice_usb_run(coreid))
+       if (aice_usb_run(coreid) == ERROR_FAIL)
                return ERROR_FAIL;
 
        int i = 0;
@@ -3002,7 +2981,7 @@ static int aice_usb_step(uint32_t coreid)
                if (aice_usb_state(coreid, &state) != ERROR_OK)
                        return ERROR_FAIL;
 
-               if (AICE_TARGET_HALTED == state)
+               if (state == AICE_TARGET_HALTED)
                        break;
 
                int64_t then = 0;
@@ -3112,7 +3091,7 @@ static int aice_usb_read_memory_unit(uint32_t coreid, uint32_t addr, uint32_t si
                        ", size: %" PRIu32 ", count: %" PRIu32 "",
                        addr, size, count);
 
-       if (NDS_MEMORY_ACC_CPU == core_info[coreid].access_channel)
+       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_CPU)
                aice_usb_set_address_dim(coreid, addr);
 
        uint32_t value;
@@ -3121,7 +3100,7 @@ static int aice_usb_read_memory_unit(uint32_t coreid, uint32_t addr, uint32_t si
 
        switch (size) {
                case 1:
-                       if (NDS_MEMORY_ACC_BUS == core_info[coreid].access_channel)
+                       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_BUS)
                                read_mem_func = aice_usb_read_mem_b_bus;
                        else
                                read_mem_func = aice_usb_read_mem_b_dim;
@@ -3133,7 +3112,7 @@ static int aice_usb_read_memory_unit(uint32_t coreid, uint32_t addr, uint32_t si
                        }
                        break;
                case 2:
-                       if (NDS_MEMORY_ACC_BUS == core_info[coreid].access_channel)
+                       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_BUS)
                                read_mem_func = aice_usb_read_mem_h_bus;
                        else
                                read_mem_func = aice_usb_read_mem_h_dim;
@@ -3147,7 +3126,7 @@ static int aice_usb_read_memory_unit(uint32_t coreid, uint32_t addr, uint32_t si
                        }
                        break;
                case 4:
-                       if (NDS_MEMORY_ACC_BUS == core_info[coreid].access_channel)
+                       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_BUS)
                                read_mem_func = aice_usb_read_mem_w_bus;
                        else
                                read_mem_func = aice_usb_read_mem_w_dim;
@@ -3231,7 +3210,7 @@ static int aice_usb_write_memory_unit(uint32_t coreid, uint32_t addr, uint32_t s
                        ", size: %" PRIu32 ", count: %" PRIu32 "",
                        addr, size, count);
 
-       if (NDS_MEMORY_ACC_CPU == core_info[coreid].access_channel)
+       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_CPU)
                aice_usb_set_address_dim(coreid, addr);
 
        size_t i;
@@ -3239,7 +3218,7 @@ static int aice_usb_write_memory_unit(uint32_t coreid, uint32_t addr, uint32_t s
 
        switch (size) {
                case 1:
-                       if (NDS_MEMORY_ACC_BUS == core_info[coreid].access_channel)
+                       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_BUS)
                                write_mem_func = aice_usb_write_mem_b_bus;
                        else
                                write_mem_func = aice_usb_write_mem_b_dim;
@@ -3251,7 +3230,7 @@ static int aice_usb_write_memory_unit(uint32_t coreid, uint32_t addr, uint32_t s
                        }
                        break;
                case 2:
-                       if (NDS_MEMORY_ACC_BUS == core_info[coreid].access_channel)
+                       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_BUS)
                                write_mem_func = aice_usb_write_mem_h_bus;
                        else
                                write_mem_func = aice_usb_write_mem_h_dim;
@@ -3266,7 +3245,7 @@ static int aice_usb_write_memory_unit(uint32_t coreid, uint32_t addr, uint32_t s
                        }
                        break;
                case 4:
-                       if (NDS_MEMORY_ACC_BUS == core_info[coreid].access_channel)
+                       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_BUS)
                                write_mem_func = aice_usb_write_mem_w_bus;
                        else
                                write_mem_func = aice_usb_write_mem_w_dim;
@@ -3342,10 +3321,10 @@ static int aice_usb_bulk_read_mem(uint32_t coreid, uint32_t addr,
 
        int retval;
 
-       if (NDS_MEMORY_ACC_CPU == core_info[coreid].access_channel)
+       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_CPU)
                aice_usb_set_address_dim(coreid, addr);
 
-       if (NDS_MEMORY_ACC_CPU == core_info[coreid].access_channel)
+       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_CPU)
                retval = aice_usb_read_memory_unit(coreid, addr, 4, length / 4, buffer);
        else
                retval = aice_bulk_read_mem(coreid, addr, length / 4, buffer);
@@ -3360,10 +3339,10 @@ static int aice_usb_bulk_write_mem(uint32_t coreid, uint32_t addr,
 
        int retval;
 
-       if (NDS_MEMORY_ACC_CPU == core_info[coreid].access_channel)
+       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_CPU)
                aice_usb_set_address_dim(coreid, addr);
 
-       if (NDS_MEMORY_ACC_CPU == core_info[coreid].access_channel)
+       if (core_info[coreid].access_channel == NDS_MEMORY_ACC_CPU)
                retval = aice_usb_write_memory_unit(coreid, addr, 4, length / 4, buffer);
        else
                retval = aice_bulk_write_mem(coreid, addr, length / 4, buffer);
@@ -3373,10 +3352,10 @@ static int aice_usb_bulk_write_mem(uint32_t coreid, uint32_t addr,
 
 static int aice_usb_read_debug_reg(uint32_t coreid, uint32_t addr, uint32_t *val)
 {
-       if (AICE_TARGET_HALTED == core_info[coreid].core_state) {
-               if (NDS_EDM_SR_EDMSW == addr) {
+       if (core_info[coreid].core_state == AICE_TARGET_HALTED) {
+               if (addr == NDS_EDM_SR_EDMSW) {
                        *val = core_info[coreid].edmsw_backup;
-               } else if (NDS_EDM_SR_EDM_DTR == addr) {
+               } else if (addr == NDS_EDM_SR_EDM_DTR) {
                        if (core_info[coreid].target_dtr_valid) {
                                /* if EDM_DTR has read out, clear it. */
                                *val = core_info[coreid].target_dtr_backup;
@@ -3393,8 +3372,8 @@ static int aice_usb_read_debug_reg(uint32_t coreid, uint32_t addr, uint32_t *val
 
 static int aice_usb_write_debug_reg(uint32_t coreid, uint32_t addr, const uint32_t val)
 {
-       if (AICE_TARGET_HALTED == core_info[coreid].core_state) {
-               if (NDS_EDM_SR_EDM_DTR == addr) {
+       if (core_info[coreid].core_state == AICE_TARGET_HALTED) {
+               if (addr == NDS_EDM_SR_EDM_DTR) {
                        core_info[coreid].host_dtr_backup = val;
                        core_info[coreid].edmsw_backup |= 0x2;
                        core_info[coreid].host_dtr_valid = true;
@@ -3422,7 +3401,7 @@ static int aice_usb_memory_mode(uint32_t coreid, enum nds_memory_select mem_sele
 
        core_info[coreid].memory_select = mem_select;
 
-       if (NDS_MEMORY_SELECT_AUTO != core_info[coreid].memory_select)
+       if (core_info[coreid].memory_select != NDS_MEMORY_SELECT_AUTO)
                aice_write_misc(coreid, NDS_EDM_MISC_ACC_CTL,
                                core_info[coreid].memory_select - 1);
        else
@@ -3474,13 +3453,13 @@ static int aice_usb_read_tlb(uint32_t coreid, target_addr_t virtual_address,
        aice_read_reg(coreid, MR4, &value_mr4);
 
        access_page_size = value_mr4 & 0xF;
-       if (0 == access_page_size) { /* 4K page */
+       if (access_page_size == 0) { /* 4K page */
                virtual_offset = virtual_address & 0x00000FFF;
                physical_page_number = value_mr3 & 0xFFFFF000;
-       } else if (1 == access_page_size) { /* 8K page */
+       } else if (access_page_size == 1) { /* 8K page */
                virtual_offset = virtual_address & 0x00001FFF;
                physical_page_number = value_mr3 & 0xFFFFE000;
-       } else if (5 == access_page_size) { /* 1M page */
+       } else if (access_page_size == 5) { /* 1M page */
                virtual_offset = virtual_address & 0x000FFFFF;
                physical_page_number = value_mr3 & 0xFFF00000;
        } else {
@@ -3566,10 +3545,10 @@ static int aice_usb_dcache_inval_all(uint32_t coreid)
                        cache_index = (way_index << (dcache->log2_set + dcache->log2_line_size)) |
                                (set_index << dcache->log2_line_size);
 
-                       if (ERROR_OK != aice_write_dtr(coreid, cache_index))
+                       if (aice_write_dtr(coreid, cache_index) != ERROR_OK)
                                return ERROR_FAIL;
 
-                       if (ERROR_OK != aice_execute_dim(coreid, instructions, 4))
+                       if (aice_execute_dim(coreid, instructions, 4) != ERROR_OK)
                                return ERROR_FAIL;
                }
        }
@@ -3614,10 +3593,10 @@ static int aice_usb_dcache_wb_all(uint32_t coreid)
                        cache_index = (way_index << (dcache->log2_set + dcache->log2_line_size)) |
                                (set_index << dcache->log2_line_size);
 
-                       if (ERROR_OK != aice_write_dtr(coreid, cache_index))
+                       if (aice_write_dtr(coreid, cache_index) != ERROR_OK)
                                return ERROR_FAIL;
 
-                       if (ERROR_OK != aice_execute_dim(coreid, instructions, 4))
+                       if (aice_execute_dim(coreid, instructions, 4) != ERROR_OK)
                                return ERROR_FAIL;
                }
        }
@@ -3662,10 +3641,10 @@ static int aice_usb_icache_inval_all(uint32_t coreid)
                        cache_index = (way_index << (icache->log2_set + icache->log2_line_size)) |
                                (set_index << icache->log2_line_size);
 
-                       if (ERROR_OK != aice_write_dtr(coreid, cache_index))
+                       if (aice_write_dtr(coreid, cache_index) != ERROR_OK)
                                return ERROR_FAIL;
 
-                       if (ERROR_OK != aice_execute_dim(coreid, instructions, 4))
+                       if (aice_execute_dim(coreid, instructions, 4) != ERROR_OK)
                                return ERROR_FAIL;
                }
        }
@@ -3741,7 +3720,7 @@ static int aice_usb_program_edm(uint32_t coreid, char *command_sequence)
 
        /* init strtok() */
        command_str = strtok(command_sequence, ";");
-       if (command_str == NULL)
+       if (!command_str)
                return ERROR_OK;
 
        do {
@@ -3760,14 +3739,14 @@ static int aice_usb_program_edm(uint32_t coreid, char *command_sequence)
                        reg_name_0 = strstr(command_str, "gen_port0");
                        reg_name_1 = strstr(command_str, "gen_port1");
 
-                       if (reg_name_0 != NULL) {
+                       if (reg_name_0) {
                                data_value = strtoul(reg_name_0 + 9, NULL, 0);
 
                                if (aice_write_misc(coreid,
                                                        NDS_EDM_MISC_GEN_PORT0, data_value) != ERROR_OK)
                                        return ERROR_FAIL;
 
-                       } else if (reg_name_1 != NULL) {
+                       } else if (reg_name_1) {
                                data_value = strtoul(reg_name_1 + 9, NULL, 0);
 
                                if (aice_write_misc(coreid,
@@ -3783,7 +3762,7 @@ static int aice_usb_program_edm(uint32_t coreid, char *command_sequence)
                /* update command_str */
                command_str = strtok(NULL, ";");
 
-       } while (command_str != NULL);
+       } while (command_str);
 
        return ERROR_OK;
 }
@@ -3795,7 +3774,7 @@ static int aice_usb_set_command_mode(enum aice_command_mode command_mode)
        /* flush usb_packets_buffer as users change mode */
        retval = aice_usb_packet_flush();
 
-       if (AICE_COMMAND_MODE_BATCH == command_mode) {
+       if (command_mode == AICE_COMMAND_MODE_BATCH) {
                /* reset batch buffer */
                aice_command_mode = AICE_COMMAND_MODE_NORMAL;
                retval = aice_write_ctrl(AICE_WRITE_CTRL_BATCH_CMD_BUF0_CTRL, 0x40000);
@@ -3916,13 +3895,13 @@ static int fill_profiling_batch_commands(uint32_t coreid, uint32_t reg_no)
        aice_read_dtr_to_buffer(coreid, AICE_BATCH_DATA_BUFFER_0);
 
        /* get samples */
-       if (NDS32_REG_TYPE_GPR == nds32_reg_type(reg_no)) {
+       if (nds32_reg_type(reg_no) == NDS32_REG_TYPE_GPR) {
                /* general registers */
                dim_instructions[0] = MTSR_DTR(reg_no);
                dim_instructions[1] = DSB;
                dim_instructions[2] = NOP;
                dim_instructions[3] = BEQ_MINUS_12;
-       } else if (NDS32_REG_TYPE_SPR == nds32_reg_type(reg_no)) {
+       } else if (nds32_reg_type(reg_no) == NDS32_REG_TYPE_SPR) {
                /* user special registers */
                dim_instructions[0] = MFUSR_G0(0, nds32_reg_sr_index(reg_no));
                dim_instructions[1] = MTSR_DTR(0);
@@ -4020,7 +3999,7 @@ static int aice_usb_profiling(uint32_t coreid, uint32_t interval, uint32_t itera
 
                /* check status */
                uint32_t i;
-               uint32_t batch_status;
+               uint32_t batch_status = 0;
 
                i = 0;
                while (1) {

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