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-rw-r--r--sound/pci/oxygen/oxygen_mixer.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index 6facac5..05eb899 100644
--- a/sound/pci/oxygen/oxygen_mixer.c
+++ b/sound/pci/oxygen/oxygen_mixer.c
@@ -512,9 +512,12 @@ static int ac97_switch_get(struct snd_kcontrol *ctl,
static void mute_ac97_ctl(struct oxygen *chip, unsigned int control)
{
- unsigned int priv_idx = chip->controls[control]->private_value & 0xff;
+ unsigned int priv_idx;
u16 value;
+ if (!chip->controls[control])
+ return;
+ priv_idx = chip->controls[control]->private_value & 0xff;
value = oxygen_read_ac97(chip, 0, priv_idx);
if (!(value & 0x8000)) {
oxygen_write_ac97(chip, 0, priv_idx, value | 0x8000);
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