From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 27 Jan 2014 15:26:16 +0000 (+0100)
Subject: ALSA: hda - Avoid unnecessary verbs write in snd_hda_activate_path()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8f0972dfa9b7378aaf14eebf2454abd93a6033ad;p=deliverable%2Flinux.git

ALSA: hda - Avoid unnecessary verbs write in snd_hda_activate_path()

... by using snd_Hda_codec_update_cache() instead of *_write_cache().
Since all path elements should have been updated by this function,
we are safe to assume that the cache contents are consistent.

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

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 8321a97d5c05..437ef13c5a90 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -762,7 +762,7 @@ void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
 						    AC_PWRST_D0);
 		}
 		if (enable && path->multi[i])
-			snd_hda_codec_write_cache(codec, nid, 0,
+			snd_hda_codec_update_cache(codec, nid, 0,
 					    AC_VERB_SET_CONNECT_SEL,
 					    path->idx[i]);
 		if (has_amp_in(codec, path, i))