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| author | Takashi Iwai <tiwai@suse.de> | 2014-07-14 10:45:31 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-07-14 10:45:31 +0200 |
| commit | cd50065b3be83a705635550c04e368f2a4cc44d0 (patch) | |
| tree | 43104061691936049959d7edbd6d445b090234ee /sound/pci/hda/hda_controller.c | |
| parent | 91947d8cc553b3147140334a295218499b77ea92 (diff) | |
| download | lwn-cd50065b3be83a705635550c04e368f2a4cc44d0.tar.gz lwn-cd50065b3be83a705635550c04e368f2a4cc44d0.zip | |
ALSA: hda - Revert stream assignment order for Intel controllers
We got a regression report for 3.15.x kernels, and this turned out to
be triggered by the fix for stream assignment order. On reporter's
machine with Intel controller (8086:1e20) + VIA VT1802 codec, the
first playback slot can't work with speaker outputs.
But the original commit was actually a fix for AMD controllers where
no proper GCAP value is returned, we shouldn't revert the whole
commit. Instead, in this patch, a new flag is introduced to determine
the stream assignment order, and follow the old behavior for Intel
controllers.
Fixes: dcb32ecd9a53 ('ALSA: hda - Do not assign streams in reverse order')
Reported-and-tested-by: Steven Newbury <steve@snewbury.org.uk>
Cc: <stable@vger.kernel.org> [v3.15+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_controller.c')
| -rw-r--r-- | sound/pci/hda/hda_controller.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 480bbddbd801..6df04d91c93c 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -193,7 +193,8 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream) dsp_unlock(azx_dev); return azx_dev; } - if (!res) + if (!res || + (chip->driver_caps & AZX_DCAPS_REVERSE_ASSIGN)) res = azx_dev; } dsp_unlock(azx_dev); |