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| author | Takashi Iwai <tiwai@suse.de> | 2012-12-04 17:01:25 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-12-12 11:32:56 +0100 |
| commit | c5c215232dfb71d1cf2cc8627bdc2206726aa8a3 (patch) | |
| tree | ec7198f923b216a9701943479560c219ffa8ab9f /sound | |
| parent | 1d31affbef40cea4958da03cf6ec3cea1c7f801e (diff) | |
| download | linux-stable-c5c215232dfb71d1cf2cc8627bdc2206726aa8a3.tar.gz linux-stable-c5c215232dfb71d1cf2cc8627bdc2206726aa8a3.tar.bz2 linux-stable-c5c215232dfb71d1cf2cc8627bdc2206726aa8a3.zip | |
ALSA: hda - Avoid doubly suspend after vga switcheroo
The HD-audio driver artificially calls the suspend and the resume code
path in the VGA switcheroo state changes. When a machine goes to
suspend, it tries to suspend the device again, and it stalls at
snd_power_wait().
This patch adds checks whether the devices were already in (forced)
suspend in PM callbacks for avoiding the doubly suspend.
Reported-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index eb88c528e120..1da8a5c9b9e1 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2630,6 +2630,9 @@ static int azx_suspend(struct device *dev) struct azx *chip = card->private_data; struct azx_pcm *p; + if (chip->disabled) + return 0; + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); azx_clear_irq_pending(chip); list_for_each_entry(p, &chip->pcm_list, list) @@ -2655,6 +2658,9 @@ static int azx_resume(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data; + if (chip->disabled) + return 0; + pci_set_power_state(pci, PCI_D0); pci_restore_state(pci); if (pci_enable_device(pci) < 0) { |