jtag_get_device() now returns NULL and reports error instead of invoking exit()

[openocd.git] / src / jtag / zy1000.c

diff --git a/src/jtag/zy1000.c b/src/jtag/zy1000.c
index a50ed529c8b6990c328c2cd623631f4e36222001..5ec1d8adbd197d957eb520f38f2ed897db685bc0 100644 (file)
--- a/src/jtag/zy1000.c
+++ b/src/jtag/zy1000.c
@@ -501,6 +501,11 @@ int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_st
                int pause=i==(jtag_num_devices-1);
                int found = 0;
                device = jtag_get_device(i);
+               if (device==NULL)
+               {
+                       return ERROR_FAIL;
+               }
+
                scan_size = device->ir_length;
 
                /* search the list */
@@ -521,7 +526,7 @@ int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_st
 
                                scanFields(1, fields+j, TAP_SI, pause);
                                /* update device information */
-                               buf_cpy(fields[j].out_value, jtag_get_device(i)->cur_instr, scan_size);
+                               buf_cpy(fields[j].out_value, device->cur_instr, scan_size);
 
                                device->bypass = 0;
                                break;
@@ -539,7 +544,7 @@ int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_st
                        tmp.num_bits = scan_size;
                        scanFields(1, &tmp, TAP_SI, pause);
                        /* update device information */
-                       buf_cpy(tmp.out_value, jtag_get_device(i)->cur_instr, scan_size);
+                       buf_cpy(tmp.out_value, device->cur_instr, scan_size);
                        device->bypass = 1;
                }
        }