Commit 852a8a97 authored by Jaroslav Kysela's avatar Jaroslav Kysela Committed by Takashi Iwai
Browse files

ALSA: pcm - fix mmap capability check for the snd-dummy driver 



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: c4824ae7 ("ALSA: pcm: Fix mmap capability check")
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20210730090254.612478-1-perex@perex.cz


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 8dde723f

sound/core/pcm_native.c

+1 −1
Original line number Diff line number Diff line
@@ -246,7 +246,7 @@ static bool hw_support_mmap(struct snd_pcm_substream *substream) 
	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) {