ALSA: snd-meastro3: Ignore spurious HV interrupts during suspend / resume
[pandora-kernel.git] / sound / pci / maestro3.c
index 728de23..b56e336 100644 (file)
@@ -849,6 +849,7 @@ struct snd_m3 {
        struct snd_kcontrol *master_switch;
        struct snd_kcontrol *master_volume;
        struct tasklet_struct hwvol_tq;
        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;
 
 #ifdef CONFIG_PM
        u16 *suspend_mem;
@@ -1614,6 +1615,11 @@ static void snd_m3_update_hw_volume(unsigned long private_data)
        outb(0x88, chip->iobase + SHADOW_MIX_REG_MASTER);
        outb(0x88, chip->iobase + HW_VOL_COUNTER_MASTER);
 
        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;
 
        if (!chip->master_switch || !chip->master_volume)
                return;
 
@@ -2425,6 +2431,7 @@ static int m3_suspend(struct pci_dev *pci, pm_message_t state)
        if (chip->suspend_mem == NULL)
                return 0;
 
        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);
        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);
        snd_m3_hv_init(chip);
 
        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+       chip->in_suspend = 0;
        return 0;
 }
 #endif /* CONFIG_PM */
        return 0;
 }
 #endif /* CONFIG_PM */