Re: [PATCH][next] ASoC: rsnd: check for zero node count

From: Colin Ian King
Date: Thu Jun 03 2021 - 06:44:49 EST

On 02/06/2021 12:21, Dan Carpenter wrote:
> On Wed, Jun 02, 2021 at 11:37:22AM +0100, Colin King wrote:
>> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>> The call to rsnd_node_count can potentially return a zero node count
>> so add a check for this corner case. (Note that the two other calls
>> to rsnd_node_count in the kernel perform this check, so I think it
>> justifies adding this). This avoids using a zero nr in a devm_kcalloc
>> call.
> I don't have a problem with the patch, but really the code works fine
> as is. A better commit message is:
> Most callers of_get_child_count() check that "nr" is non-zero so it
> causes a static checker warning when we don't do that here. This
> doesn't cause a problem or a crash, but having zero SSUIes (What's
> plural of ssui?) doesn't make sense either so let's add a check.

Good idea. I'll send a V2. Thanks Dan.

> regards,
> dan carpenter