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| author | Takashi Iwai <tiwai@suse.de> | 2012-02-21 11:59:45 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-02-21 11:59:45 +0100 |
| commit | 5803a326465e38ee3cab8badbd8947732a8277f5 (patch) | |
| tree | 21abe80de9685862a4cca2ac5f0fa0a4998401cd | |
| parent | 164f73ee93131f67a61eaca6a6f6180580c39445 (diff) | |
| download | op-kernel-dev-5803a326465e38ee3cab8badbd8947732a8277f5.zip op-kernel-dev-5803a326465e38ee3cab8badbd8947732a8277f5.tar.gz | |
ALSA: hda/realtek - Fix possible Oops with NULL input_mux
When BIOS is damn crazy and gives no pin-config at all, the driver might
lead to a NULL dereference. Let's add a NULL check for such a case.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/pci/hda/patch_realtek.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index eba50dff..997cc81 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -302,6 +302,9 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx, int i, type, num_conns; hda_nid_t nid; + if (!spec->input_mux) + return 0; + mux_idx = adc_idx >= spec->num_mux_defs ? 0 : adc_idx; imux = &spec->input_mux[mux_idx]; if (!imux->num_items && mux_idx > 0) |
