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| author | Dylan Reid <dgreid@chromium.org> | 2012-06-21 21:51:22 -0700 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-06-22 09:08:58 +0200 |
| commit | b43d224767e426cf1a8b6622d1d172f2b2b0e857 (patch) | |
| tree | 0109819c40a3661372c36b400fdf4cd8db69f21a /sound/pci/hda | |
| parent | e9ea8e8f229f4963bf01658e79c1c01780de25dd (diff) | |
| download | linux-stable-b43d224767e426cf1a8b6622d1d172f2b2b0e857.tar.gz linux-stable-b43d224767e426cf1a8b6622d1d172f2b2b0e857.tar.bz2 linux-stable-b43d224767e426cf1a8b6622d1d172f2b2b0e857.zip | |
ALSA: hda - Don't power up when not powered down.
After cancel_delayed_work_sync returns, the power down work either never
started (power_on == 1) or finished (power_on == 0). In the former case
there is no need to power up again.
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 604699cf85f5..045b5e7b8245 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -4444,6 +4444,13 @@ static void __snd_hda_power_up(struct hda_codec *codec, bool wait_power_down) cancel_delayed_work_sync(&codec->power_work); spin_lock(&codec->power_lock); + /* If the power down delayed work was cancelled above before starting, + * then there is no need to go through power up here. + */ + if (codec->power_on) { + spin_unlock(&codec->power_lock); + return; + } trace_hda_power_up(codec); snd_hda_update_power_acct(codec); codec->power_on = 1; |