[54/98] ALSA: snd-meastro3: Ignore spurious HV interrupts during suspend / resume
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From: Greg KH on 10 May 2010 19:10 2.6.32-stable review patch. If anyone has any objections, please let us know. ------------------ From: Hans de Goede <hdegoede(a)redhat.com> commit 715aa675338ce6e1a3b4f77cf87ea611f93058a8 upstream. Ignore spurious HV interrupts during suspend / resume, this avoids mistaking them for a mute button press. This is not very pretty but it seems the only way to fix the master volume control gets muted after suspend issue I'm seeing. Note that the es1968 driver is doing exactly the same. Signed-off-by: Hans de Goede <hdegoede(a)redhat.com> Signed-off-by: Takashi Iwai <tiwai(a)suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de> --- sound/pci/maestro3.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/sound/pci/maestro3.c +++ b/sound/pci/maestro3.c @@ -849,6 +849,7 @@ struct snd_m3 { struct snd_kcontrol *master_switch; struct snd_kcontrol *master_volume; struct tasklet_struct hwvol_tq; + unsigned int in_suspend; #ifdef CONFIG_PM u16 *suspend_mem; @@ -1614,6 +1615,11 @@ static void snd_m3_update_hw_volume(unsi outb(0x88, chip->iobase + SHADOW_MIX_REG_MASTER); outb(0x88, chip->iobase + HW_VOL_COUNTER_MASTER); + /* Ignore spurious HV interrupts during suspend / resume, this avoids + mistaking them for a mute button press. */ + if (chip->in_suspend) + return; + if (!chip->master_switch || !chip->master_volume) return; @@ -2425,6 +2431,7 @@ static int m3_suspend(struct pci_dev *pc if (chip->suspend_mem == NULL) return 0; + chip->in_suspend = 1; snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); snd_pcm_suspend_all(chip->pcm); snd_ac97_suspend(chip->ac97); @@ -2498,6 +2505,7 @@ static int m3_resume(struct pci_dev *pci snd_m3_hv_init(chip); snd_power_change_state(card, SNDRV_CTL_POWER_D0); + chip->in_suspend = 0; return 0; } #endif /* CONFIG_PM */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |