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ALSA: hda - check NULL pointer when creating SPDIF controls

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If the SPDIF control array cannot be reallocated, the function
will return to avoid dereferencing a NULL pointer.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2013-03-07 14:10:25 -05:00 committed by Takashi Iwai
parent 9fedcc44f1
commit 25336e8ae2
1 changed files with 2 additions and 0 deletions
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2
sound/pci/hda/hda_codec.c
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@ -3334,6 +3334,8 @@ int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
return -EBUSY;
}
spdif = snd_array_new(&codec->spdif_out);
if (!spdif)
return -ENOMEM;
for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) {
kctl = snd_ctl_new1(dig_mix, codec);
if (!kctl)