Re: [PATCH] i2c-mxs: fix compile warning in mxs_i2c_xfer()

["Uwe Kleine-König" <u.kleine-koenig-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>]

Hello Shawn,

On Thu, Nov 24, 2011 at 03:52:20PM +0800, Shawn Guo wrote:
>   CC      drivers/i2c/busses/i2c-mxs.o
> drivers/i2c/busses/i2c-mxs.c: In function ‘mxs_i2c_xfer’:
> drivers/i2c/busses/i2c-mxs.c:196:6: warning: ‘data’ may be used uninitialized in this function
> 
> Signed-off-by: Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> ---
>  drivers/i2c/busses/i2c-mxs.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
> index 7e78f7c..00f098f 100644
> --- a/drivers/i2c/busses/i2c-mxs.c
> +++ b/drivers/i2c/busses/i2c-mxs.c
> @@ -193,7 +193,7 @@ static int mxs_i2c_wait_for_data(struct mxs_i2c_dev *i2c)
>  
>  static int mxs_i2c_finish_read(struct mxs_i2c_dev *i2c, u8 *buf, int len)
>  {
> -	u32 data;
> +	u32 data = 0;
>  	int i;
>  
>  	for (i = 0; i < len; i++) {
Looks like a stupid compiler. Then better use 

	u32 uninitialized_var(data);

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |