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| author |   Takashi Iwai <tiwai@suse.de> | 2021-08-08 09:01:16 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-08-09 07:52:31 +0200 |
| commit | dc0dc8a73e8e4dc33fba93dfe23356cc5a500c57 (patch) | |
| tree | 4c0c7a98a67476e0f81dcee18a0bbf5c146a5177 /sound/pci/hda/patch_realtek.c | |
| parent | ALSA: hda: Add quirk for ASUS Flow x13 (diff) | |
| download | linux-dev-dc0dc8a73e8e4dc33fba93dfe23356cc5a500c57.tar.xz linux-dev-dc0dc8a73e8e4dc33fba93dfe23356cc5a500c57.zip | |
ALSA: pcm: Fix mmap breakage without explicit buffer setup
The recent fix c4824ae7db41 ("ALSA: pcm: Fix mmap capability check")
restricts the mmap capability only to the drivers that properly set up
the buffers, but it caused a regression for a few drivers that manage
the buffer on its own way.
For those with UNKNOWN buffer type (i.e. the uninitialized / unused
substream->dma_buffer), just assume that the driver handles the mmap
properly and blindly trust the hardware info bit.
Fixes: c4824ae7db41 ("ALSA: pcm: Fix mmap capability check")
Reported-and-tested-by: Jeff Woods <jwoods@fnordco.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/s5him0gpghv.wl-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_realtek.c')
0 files changed, 0 insertions, 0 deletions