From: Oleksij Rempel <bug-track@fisher-privat.net>
Date: Thu, 18 Apr 2013 10:00:14 +0000 (+0200)
Subject: do not wait forever on ejtag_dma_dstrt_poll
X-Git-Tag: v0.8.0-rc1~348
X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=commitdiff_plain;h=21dfb6ee1a238beb7b6e7c1874768c8a9b996e0b

do not wait forever on ejtag_dma_dstrt_poll

Change-Id: I26adab09839795ecf363b7db912392bd5314cec5
Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>
Reviewed-on: http://openocd.zylin.com/1344
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
---

diff --git a/src/target/mips32_dmaacc.c b/src/target/mips32_dmaacc.c
index 733f96cf42..eb6cd8ce11 100644
--- a/src/target/mips32_dmaacc.c
+++ b/src/target/mips32_dmaacc.c
@@ -28,6 +28,7 @@
 #endif
 
 #include "mips32_dmaacc.h"
+#include <helper/time_support.h>
 
 static int mips32_dmaacc_read_mem8(struct mips_ejtag *ejtag_info,
 		uint32_t addr, int count, uint8_t *buf);
@@ -53,13 +54,20 @@ static int mips32_dmaacc_write_mem32(struct mips_ejtag *ejtag_info,
  * displaying/modifying memory and memory mapped registers.
  */
 
-static void ejtag_dma_dstrt_poll(struct mips_ejtag *ejtag_info)
+static int ejtag_dma_dstrt_poll(struct mips_ejtag *ejtag_info)
 {
 	uint32_t ejtag_ctrl;
+	int64_t start = timeval_ms();
+
 	do {
+		if (timeval_ms() - start > 1000) {
+			LOG_ERROR("DMA time out");
+			return -ETIMEDOUT;
+		}
 		ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
 		mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
 	} while (ejtag_ctrl & EJTAG_CTRL_DSTRT);
+	return 0;
 }
 
 static int ejtag_dma_read(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *data)