[ALSA] hda-intel - Fix NULL dereference in resume

codec->patch_ops.init can be NULL.  Check before calling it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index efd56a3396bda0946bfcac2b8e2c4c18b273ea51..fc1ddf408b9ba7de6d42c56dfa0ffbc74afaeaf8 100644 (file)
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1677,7 +1677,8 @@ static void hda_call_codec_resume(struct hda_codec *codec)
        if (codec->patch_ops.resume)
                codec->patch_ops.resume(codec);
        else {
-               codec->patch_ops.init(codec);
+               if (codec->patch_ops.init)
+                       codec->patch_ops.init(codec);
                snd_hda_codec_resume_amp(codec);
                snd_hda_codec_resume_cache(codec);
        }