diff options
| author | Takashi Iwai <tiwai@suse.de> | 2010-06-11 11:24:58 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-02 10:29:25 -0700 |
| commit | fd1dd3913b09ddb4478b5f94bf8137bcd9da2eb2 (patch) | |
| tree | f2aa339da411903316af128227b0baf3fef8d8bb | |
| parent | 1180deda29be7691126b9bdd608d45d3678b7875 (diff) | |
ALSA: hda - Don't check capture source mixer if no ADC is available
commit fbe618f216830f47b183858c3380d4767b1ad02f upstream.
With multiple codec configurations, some codec might have no ADC, thus
it keeps spec->adc_nids = NULL. This causes an Oops in alc_build_controls().
Reference: kernel bug #16156
https://bugzilla.kernel.org/show_bug.cgi?id=16156
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | sound/pci/hda/patch_realtek.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 3273765c453..3efd092aec4 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -2550,16 +2550,18 @@ static int alc_build_controls(struct hda_codec *codec) } /* assign Capture Source enums to NID */ - kctl = snd_hda_find_mixer_ctl(codec, "Capture Source"); - if (!kctl) - kctl = snd_hda_find_mixer_ctl(codec, "Input Source"); - for (i = 0; kctl && i < kctl->count; i++) { - hda_nid_t *nids = spec->capsrc_nids; - if (!nids) - nids = spec->adc_nids; - err = snd_hda_add_nid(codec, kctl, i, nids[i]); - if (err < 0) - return err; + if (spec->capsrc_nids || spec->adc_nids) { + kctl = snd_hda_find_mixer_ctl(codec, "Capture Source"); + if (!kctl) + kctl = snd_hda_find_mixer_ctl(codec, "Input Source"); + for (i = 0; kctl && i < kctl->count; i++) { + hda_nid_t *nids = spec->capsrc_nids; + if (!nids) + nids = spec->adc_nids; + err = snd_hda_add_nid(codec, kctl, i, nids[i]); + if (err < 0) + return err; + } } if (spec->cap_mixer) { const char *kname = kctl ? kctl->id.name : NULL; |