mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-17 09:43:59 +08:00
ALSA: memalloc: Catch call with NULL snd_dma_buffer pointer
Although we've covered all calls with NULL dma buffer pointer, so far,
there may be still some else in the wild. For catching such a case
more easily, add a WARN_ON_ONCE() in snd_dma_get_ops().
Fixes: 37af81c599
("ALSA: core: Abstract memory alloc helpers")
Link: https://lore.kernel.org/r/20211105102103.28148-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
7599acb7b9
commit
dce9446192
@ -631,6 +631,8 @@ static const struct snd_malloc_ops *dma_ops[] = {
|
||||
|
||||
static const struct snd_malloc_ops *snd_dma_get_ops(struct snd_dma_buffer *dmab)
|
||||
{
|
||||
if (WARN_ON_ONCE(!dmab))
|
||||
return NULL;
|
||||
if (WARN_ON_ONCE(dmab->dev.type <= SNDRV_DMA_TYPE_UNKNOWN ||
|
||||
dmab->dev.type >= ARRAY_SIZE(dma_ops)))
|
||||
return NULL;
|
||||
|
Loading…
Reference in New Issue
Block a user