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| author |   Takashi Iwai <tiwai@suse.de> | 2013-01-15 14:44:41 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-01-15 14:55:16 +0100 |
| commit | 6f54c361329dbb67dac9de174e938992651d12d7 (patch) | |
| tree | 1e43ed773dbdbeb9fda80e5b9f83797f8b82ea40 /sound/pci/hda/patch_realtek.c | |
| parent | Merge tag 'asoc-atmel-pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus (diff) | |
| download | linux-dev-6f54c361329dbb67dac9de174e938992651d12d7.tar.xz linux-dev-6f54c361329dbb67dac9de174e938992651d12d7.zip | |
ALSA: hda/hdmi - Work around "alsactl restore" errors
When "alsactl restore" is performed on HDMI codecs, it tries to
restore the channel map value since the channel map controls are
writable. But hdmi_chmap_ctl_put() returns -EBADFD when no PCM stream
is assigned yet, and this results in an error message from alsactl.
Although the error is harmless, it's certainly ugly and can be
regarded as a regression.
As a workaround, this patch changes the return code in such a case to
be zero for making others happy. (A slight excuse is: when the chmap
is changed through the proper alsa-lib API, the PCM status is checked
there anyway, so we don't have to be too strict in the kernel side.)
Cc: <stable@vger.kernel.org> [v3.7+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to '')
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