linux-kernel - [PATCH 3.4 100/134] ALSA: hda - Cache the MUX selection for generic HDMI

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Date:	Wed,  9 Apr 2014 20:23:36 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
	Ben Hutchings <ben@...adent.org.uk>,
	Weng Meiling <wengmeiling.weng@...wei.com>
Subject: [PATCH 3.4 100/134] ALSA: hda - Cache the MUX selection for generic HDMI

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@...e.de>

commit bddee96b5d0db869f47b195fe48c614ca824203c upstream.

When a selection to a converter MUX is changed in hdmi_pcm_open(), it
should be cached so that the given connection can be restored properly
at PM resume.  We need just to replace the corresponding
snd_hda_codec_write() call with snd_hda_codec_write_cache().

Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Cc: Weng Meiling <wengmeiling.weng@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/pci/hda/patch_hdmi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -910,7 +910,7 @@ static int hdmi_pcm_open(struct hda_pcm_
 	per_cvt->assigned = 1;
 	hinfo->nid = per_cvt->cvt_nid;
 
-	snd_hda_codec_write(codec, per_pin->pin_nid, 0,
+	snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
 			    AC_VERB_SET_CONNECT_SEL,
 			    mux_idx);
 	snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid);


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