diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-05-09 12:36:22 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-05-09 12:36:22 +0200 |
| commit | a2d96e778d1b15d2213f3b7737aa86fd8eda44cb (patch) | |
| tree | da44538e096a40b3549100c43cae0fd640159111 /sound/pci | |
| parent | 607d4f7f0551eb591fbaca4bf44a8d6251e82f00 (diff) | |
ALSA: hda - More robustify the power-up/down sequence
Check the power_transition up/down state instead of boolean bit, so
that the power-up sequence can cancel the pending power-down work
properly. Also, by moving cancel_delayed_work_sync() before the
actual power-up sequence, make sure that the delayed power-down is
completed.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 22 | ||||
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 2 |
2 files changed, 16 insertions, 8 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index e0f8667ae226..731f8500a23a 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -2265,7 +2265,7 @@ int snd_hda_codec_reset(struct hda_codec *codec) /* OK, let it free */ #ifdef CONFIG_SND_HDA_POWER_SAVE - cancel_delayed_work(&codec->power_work); + cancel_delayed_work_sync(&codec->power_work); codec->power_on = 0; codec->power_transition = 0; codec->power_jiffies = jiffies; @@ -3491,11 +3491,14 @@ static void hda_call_codec_suspend(struct hda_codec *codec) codec->afg ? codec->afg : codec->mfg, AC_PWRST_D3); #ifdef CONFIG_SND_HDA_POWER_SAVE - snd_hda_update_power_acct(codec); cancel_delayed_work(&codec->power_work); + spin_lock(&codec->power_lock); + snd_hda_update_power_acct(codec); + trace_hda_power_down(codec); codec->power_on = 0; codec->power_transition = 0; codec->power_jiffies = jiffies; + spin_unlock(&codec->power_lock); #endif } @@ -4294,13 +4297,15 @@ static void hda_power_work(struct work_struct *work) struct hda_bus *bus = codec->bus; spin_lock(&codec->power_lock); + if (codec->power_transition > 0) { /* during power-up sequence? */ + spin_unlock(&codec->power_lock); + return; + } if (!codec->power_on || codec->power_count) { codec->power_transition = 0; spin_unlock(&codec->power_lock); return; } - - trace_hda_power_down(codec); spin_unlock(&codec->power_lock); hda_call_codec_suspend(codec); @@ -4341,11 +4346,15 @@ void snd_hda_power_up(struct hda_codec *codec) spin_lock(&codec->power_lock); codec->power_count++; - if (codec->power_on || codec->power_transition) { + if (codec->power_on || codec->power_transition > 0) { spin_unlock(&codec->power_lock); return; } + spin_unlock(&codec->power_lock); + cancel_delayed_work_sync(&codec->power_work); + + spin_lock(&codec->power_lock); trace_hda_power_up(codec); snd_hda_update_power_acct(codec); codec->power_on = 1; @@ -4358,7 +4367,6 @@ void snd_hda_power_up(struct hda_codec *codec) hda_call_codec_resume(codec); spin_lock(&codec->power_lock); - cancel_delayed_work(&codec->power_work); codec->power_transition = 0; spin_unlock(&codec->power_lock); } @@ -4383,7 +4391,7 @@ void snd_hda_power_down(struct hda_codec *codec) return; } if (power_save(codec)) { - codec->power_transition = 1; /* avoid reentrance */ + codec->power_transition = -1; /* avoid reentrance */ queue_delayed_work(codec->bus->workq, &codec->power_work, msecs_to_jiffies(power_save(codec) * 1000)); } diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 78f89147d620..fce30b42bc46 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -859,7 +859,7 @@ struct hda_codec { unsigned int no_jack_detect:1; /* Machine has no jack-detection */ #ifdef CONFIG_SND_HDA_POWER_SAVE unsigned int power_on :1; /* current (global) power-state */ - unsigned int power_transition :1; /* power-state in transition */ + int power_transition; /* power-state in transition */ int power_count; /* current (global) power refcount */ struct delayed_work power_work; /* delayed task for powerdown */ unsigned long power_on_acct; |