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ALSA: hda/hdmi: fix without unlocked before return

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Fix the following coccicheck warning:
sound/pci/hda/patch_hdmi.c:1852:2-8: preceding lock on line 1846

After add sanity check to pass klockwork check,
The spdif_mutex should be unlock before return true
in check_non_pcm_per_cvt().

Fixes: 960a581e22 ("ALSA: hda: fix some klockwork scan warnings")
Signed-off-by: Wu Bo <wubo40@huawei.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1587907042-694161-1-git-send-email-wubo40@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Wu Bo 2020-04-26 21:17:22 +08:00 committed by Takashi Iwai
parent ca76282b6f
commit a2f6472409
1 changed files with 3 additions and 1 deletions
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4
sound/pci/hda/patch_hdmi.c
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@ -1848,8 +1848,10 @@ static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
/* Add sanity check to pass klockwork check.
* This should never happen.
*/
if (WARN_ON(spdif == NULL))
if (WARN_ON(spdif == NULL)) {
mutex_unlock(&codec->spdif_mutex);
return true;
}
non_pcm = !!(spdif->status & IEC958_AES0_NONAUDIO);
mutex_unlock(&codec->spdif_mutex);
return non_pcm;