Am 19.07.2016 20:02, schrieb SF Markus Elfring:
> From: Markus Elfring <elfr...@users.sourceforge.net>
> Date: Tue, 19 Jul 2016 19:54:16 +0200
> 
> The spi_unregister_device() function tests whether its argument is NULL
> and then returns immediately. Thus the test around the call is not needed.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
> ---
>  drivers/media/v4l2-core/v4l2-common.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/v4l2-core/v4l2-common.c 
> b/drivers/media/v4l2-core/v4l2-common.c
> index 5b80850..57cfe26a 100644
> --- a/drivers/media/v4l2-core/v4l2-common.c
> +++ b/drivers/media/v4l2-core/v4l2-common.c
> @@ -291,7 +291,7 @@ struct v4l2_subdev *v4l2_spi_new_subdev(struct 
> v4l2_device *v4l2_dev,
>  error:
>       /* If we have a client but no subdev, then something went wrong and
>          we must unregister the client. */
> -     if (spi && sd == NULL)
> +     if (!sd)
>               spi_unregister_device(spi);
>  
>       return sd;


if i read the code correct sd is always NULL at this point.
so this was wrong in the first place and you must remove sd also.


re,
 wh




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