From: Mengdong Lin <mengdong.lin@intel.com>
Date: Thu, 7 Mar 2013 19:10:25 +0000 (-0500)
Subject: ALSA: hda - check NULL pointer when creating SPDIF controls
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=25336e8ae2d2fa64c9c4cc2c9c28f641134c9fa9;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

ALSA: hda - check NULL pointer when creating SPDIF controls

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>
---

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 04b57383e8cb..3dc656688c08 100644
--- 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)