diff mbox

[14/14] drivers/media/usb/gspca/cpia1.c: fix error return code

Message ID 1346945041-26676-14-git-send-email-peter.senna@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Peter Senna Tschudin Sept. 6, 2012, 3:24 p.m. UTC
From: Peter Senna Tschudin <peter.senna@gmail.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>

---
 drivers/media/usb/gspca/cpia1.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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Comments

Hans de Goede Sept. 9, 2012, 9:56 p.m. UTC | #1
Hi,

Applied to my gspca tree and included in my pull-req for 3.7 which I just send out.

Thanks,

Hans


On 09/06/2012 05:24 PM, Peter Senna Tschudin wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
>
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>   { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>      when != &ret
> *if(...)
> {
>    ... when != ret = e2
>        when forall
>   return ret;
> }
>
> // </smpl>
>
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
>
> ---
>   drivers/media/usb/gspca/cpia1.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/usb/gspca/cpia1.c b/drivers/media/usb/gspca/cpia1.c
> index 2499a88..b3ba47d 100644
> --- a/drivers/media/usb/gspca/cpia1.c
> +++ b/drivers/media/usb/gspca/cpia1.c
> @@ -751,7 +751,7 @@ static int goto_high_power(struct gspca_dev *gspca_dev)
>   	if (signal_pending(current))
>   		return -EINTR;
>
> -	do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
> +	ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
>   	if (ret)
>   		return ret;
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
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>
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diff mbox

Patch

diff --git a/drivers/media/usb/gspca/cpia1.c b/drivers/media/usb/gspca/cpia1.c
index 2499a88..b3ba47d 100644
--- a/drivers/media/usb/gspca/cpia1.c
+++ b/drivers/media/usb/gspca/cpia1.c
@@ -751,7 +751,7 @@  static int goto_high_power(struct gspca_dev *gspca_dev)
 	if (signal_pending(current))
 		return -EINTR;
 
-	do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
+	ret = do_command(gspca_dev, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
 	if (ret)
 		return ret;