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ALSA: hda - check NULL pointer when creating SPDIF controls
author
Mengdong Lin
<mengdong.lin@intel.com>
Thu, 7 Mar 2013 19:10:25 +0000
(14:10 -0500)
committer
Takashi Iwai
<tiwai@suse.de>
Thu, 7 Mar 2013 08:12:14 +0000
(09:12 +0100)
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>
sound/pci/hda/hda_codec.c
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diff --git
a/sound/pci/hda/hda_codec.c
b/sound/pci/hda/hda_codec.c
index 04b57383e8cbcb89212e2d63960242653e774b21..3dc656688c08d3637b6b8e802c0b2334e306b811 100644
(file)
--- a/
sound/pci/hda/hda_codec.c
+++ b/
sound/pci/hda/hda_codec.c
@@
-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)