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| author | Takashi Iwai <tiwai@suse.de> | 2011-12-02 15:29:12 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-12-02 15:29:12 +0100 |
| commit | cce4aa378a049f4275416ee6302dd24f37b289df (patch) | |
| tree | b686554cfc7417299b37152d746f8670ee204551 /sound | |
| parent | fc084e0b930d546872ab23667052499f7daf0fed (diff) | |
| download | linux-stable-cce4aa378a049f4275416ee6302dd24f37b289df.tar.gz linux-stable-cce4aa378a049f4275416ee6302dd24f37b289df.tar.bz2 linux-stable-cce4aa378a049f4275416ee6302dd24f37b289df.zip | |
ALSA: hda/realtek - Fix Oops in alc_mux_select()
When no imux is available (e.g. a single capture source),
alc_auto_init_input_src() may trigger an Oops due to the access to -1.
Add a proper zero-check to avoid it.
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/patch_realtek.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index cbde019d3d52..a7d1bc4e0d09 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -297,6 +297,8 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx, imux = &spec->input_mux[mux_idx]; if (!imux->num_items && mux_idx > 0) imux = &spec->input_mux[0]; + if (!imux->num_items) + return 0; if (idx >= imux->num_items) idx = imux->num_items - 1; |