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SubjectRe: [PATCH] Staging: vc04_services: Fix WARN_ON instead of BUG_ON
On Mon, Jul 31, 2017 at 12:44:03PM +0530, janani-sankarababu wrote:
> This patch is to replace the use of BUG_ON macro with WARN_ON
> inorder to prevent the crashing of the kernel.
>
> Signed-off-by: Janani Sankara Babu <jananis37@gmail.com>
> ---
> drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
> index f484bb0..30bc246 100644
> --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
> +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c
> @@ -91,7 +91,7 @@ static int snd_bcm2835_ctl_get(struct snd_kcontrol *kcontrol,
> if (mutex_lock_interruptible(&chip->audio_mutex))
^^^^^^
We dereference chip here.

> return -EINTR;
>
> - BUG_ON(!chip && !(chip->avail_substreams & AVAIL_SUBSTREAMS_MASK));
> + WARN_ON(!chip && !(chip->avail_substreams & AVAIL_SUBSTREAMS_MASK));
^^^^^
Too late.

regards,
dan carpenter

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