ALSA: hda - Protect SPDIF-related stuff via spdif_mutex

Add the missing mutex protection or move into the protected part for
SPDIF access codes for codecs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 83f345f3c961..ad319d4dc32f 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1592,10 +1592,10 @@ static int nvhdmi_8ch_7x_pcm_prepare(struct hda_pcm_stream *hinfo,
         unsigned int dataDCC2, channel_id;
         int i;
         struct hdmi_spec *spec = codec->spec;
-        struct hda_spdif_out *spdif =
-                snd_hda_spdif_out_of_nid(codec, spec->cvts[0].cvt_nid);
+        struct hda_spdif_out *spdif;
 
         mutex_lock(&codec->spdif_mutex);
+        spdif = snd_hda_spdif_out_of_nid(codec, spec->cvts[0].cvt_nid);
 
         chs = substream->runtime->channels;