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ALSA: hda - Fix NULL dereference in kctl-NID mapping in patch_realtek.c

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capsrc_nids can be NULL, and adc_nids should be taken as fallback.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-12-17 15:01:31 +01:00
parent 9e671deb85
commit d1409ae4ce
1 changed files with 4 additions and 1 deletions
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5
sound/pci/hda/patch_realtek.c
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@ -2517,7 +2517,10 @@ static int alc_build_controls(struct hda_codec *codec)
if (!kctl)
kctl = snd_hda_find_mixer_ctl(codec, "Input Source");
for (i = 0; kctl && i < kctl->count; i++) {
err = snd_hda_add_nids(codec, kctl, i, spec->capsrc_nids,
hda_nid_t *nids = spec->capsrc_nids;
if (!nids)
nids = spec->adc_nids;
err = snd_hda_add_nids(codec, kctl, i, nids,
spec->input_mux->num_items);
if (err < 0)
return err;