[PATCH] drivers: mmc: Reset watchdog when accessing mmc device

[qianfanguijin at 163.com]

From: qianfan Zhao <qianfanguijin at 163.com>

watchdog will reset when 'mmc read' or 'ext4load' a large file from mmc
device. Reset watchdog when accessing mmc device.

Signed-off-by: qianfan Zhao <qianfanguijin at 163.com>
---
 drivers/mmc/mmc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 4d9871d69f..27ffdb7fa7 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -24,6 +24,7 @@
 #include <memalign.h>
 #include <linux/list.h>
 #include <div64.h>
+#include <watchdog.h>
 #include "mmc_private.h"
 
 #define DEFAULT_CMD6_TIMEOUT_MS  500
@@ -297,6 +298,7 @@ int mmc_poll_for_busy(struct mmc *mmc, int timeout_ms)
 		if (timeout_ms-- <= 0)
 			break;
 
+		WATCHDOG_RESET();
 		udelay(1000);
 	}
 
@@ -500,6 +502,8 @@ ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
 		blocks_todo -= cur;
 		start += cur;
 		dst += cur * mmc->read_bl_len;
+
+		WATCHDOG_RESET();
 	} while (blocks_todo > 0);
 
 	return blkcnt;
-- 
2.25.1