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| author | Takashi Iwai <tiwai@suse.de> | 2010-06-11 11:24:58 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-06-11 11:24:58 +0200 |
| commit | fbe618f216830f47b183858c3380d4767b1ad02f (patch) | |
| tree | 3c880b6874eda86f047f6ec837737a177a02d8fa | |
| parent | ab669967d0ecf784567843180e715ccb0e42db36 (diff) | |
| download | linux-fbe618f216830f47b183858c3380d4767b1ad02f.tar.gz linux-fbe618f216830f47b183858c3380d4767b1ad02f.tar.bz2 linux-fbe618f216830f47b183858c3380d4767b1ad02f.zip | |
ALSA: hda - Don't check capture source mixer if no ADC is available
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
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@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 fc767b6b4785..f6cd8ed3272f 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -2619,16 +2619,18 @@ 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; |