linux-kernel - [ 34/79] ALSA: hda/via - Disable broken dynamic power control

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Message-Id: <20130611195316.916102666@linuxfoundation.org>
Date:	Tue, 11 Jun 2013 13:03:00 -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, Alex Riesen <raa.lkml@...il.com>,
	Takashi Iwai <tiwai@...e.de>
Subject: [ 34/79] ALSA: hda/via - Disable broken dynamic power control

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

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

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

commit 087c2e3b4e062573dbbc8a50b9208992e3768dcf upstream.

Since the transition to the generic parser, the actual routes used
there don't match always with the assumed static paths in some
set_widgets_power_state callbacks.  This results in the wrong power
setup in the end.  As a temporary workaround, we need to disable the
calls together with the non-functional dynamic power control enum.

Reported-by: Alex Riesen <raa.lkml@...il.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/pci/hda/patch_via.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -231,9 +231,14 @@ static void vt1708_update_hp_work(struct
 
 static void set_widgets_power_state(struct hda_codec *codec)
 {
+#if 0 /* FIXME: the assumed connections don't match always with the
+       * actual routes by the generic parser, so better to disable
+       * the control for safety.
+       */
 	struct via_spec *spec = codec->spec;
 	if (spec->set_widgets_power_state)
 		spec->set_widgets_power_state(codec);
+#endif
 }
 
 static void update_power_state(struct hda_codec *codec, hda_nid_t nid,


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