Linux 4.4.181

[thirdparty/kernel/stable-queue.git] / releases / 4.4.181 / alsa-hda-realtek-set-default-power-save-node-to-0.patch

From 317d9313925cd8388304286c0d3c8dda7f060a2d Mon Sep 17 00:00:00 2001
From: Kailang Yang <kailang@realtek.com>
Date: Thu, 23 May 2019 14:43:04 +0800
Subject: ALSA: hda/realtek - Set default power save node to 0

From: Kailang Yang <kailang@realtek.com>

commit 317d9313925cd8388304286c0d3c8dda7f060a2d upstream.

I measured power consumption between power_save_node=1 and power_save_node=0.
It's almost the same.
Codec will enter to runtime suspend and suspend.
That pin also will enter to D3. Don't need to enter to D3 by single pin.
So, Disable power_save_node as default. It will avoid more issues.
Windows Driver also has not this option at runtime PM.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6236,7 +6236,7 @@ static int patch_alc269(struct hda_codec
 
 	spec = codec->spec;
 	spec->gen.shared_mic_vref_pin = 0x18;
-	codec->power_save_node = 1;
+	codec->power_save_node = 0;
 
 #ifdef CONFIG_PM
 	codec->patch_ops.suspend = alc269_suspend;