From: Jaroslav Kysela perex@perex.cz
commit 852a8a97776a153be2e6c803218eced45f37a19c upstream.
The snd-dummy driver (fake_buffer configuration) uses the ops->page callback for the mmap operations. Allow mmap for this case, too.
Cc: stable@vger.kernel.org Fixes: c4824ae7db41 ("ALSA: pcm: Fix mmap capability check") Signed-off-by: Jaroslav Kysela perex@perex.cz Link: https://lore.kernel.org/r/20210730090254.612478-1-perex@perex.cz Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/core/pcm_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -246,7 +246,7 @@ static bool hw_support_mmap(struct snd_p if (!(substream->runtime->hw.info & SNDRV_PCM_INFO_MMAP)) return false;
- if (substream->ops->mmap) + if (substream->ops->mmap || substream->ops->page) return true;
switch (substream->dma_buffer.dev.type) {