[PATCH] i2c: i2c-mxs: Fix type of error code

From: Fabio Estevam <redacted>

cmd_err is used to handle error code, so it should not be unsigned.

This fixes the following warning when building with W=1 option:

drivers/i2c/busses/i2c-mxs.c: In function 'mxs_i2c_xfer_msg':
drivers/i2c/busses/i2c-mxs.c:331:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

Signed-off-by: Fabio Estevam <redacted>
---
 drivers/i2c/busses/i2c-mxs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 1b1a936..621153a 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c

@@ -127,7 +127,7 @@ struct mxs_i2c_dev {
 	struct device *dev;
 	void __iomem *regs;
 	struct completion cmd_complete;
-	u32 cmd_err;
+	int cmd_err;
 	struct i2c_adapter adapter;
 	const struct mxs_i2c_speed_config *speed;
 

-- 
1.7.9.5