queue-4.9/alsa-hda-realtek-set-default-power-save-node-to-0.patch

   1 From 317d9313925cd8388304286c0d3c8dda7f060a2d Mon Sep 17 00:00:00 2001
   2 From: Kailang Yang <kailang@realtek.com>
   3 Date: Thu, 23 May 2019 14:43:04 +0800
   4 Subject: ALSA: hda/realtek - Set default power save node to 0
   5
   6 From: Kailang Yang <kailang@realtek.com>
   7
   8 commit 317d9313925cd8388304286c0d3c8dda7f060a2d upstream.
   9
  10 I measured power consumption between power_save_node=1 and power_save_node=0.
  11 It's almost the same.
  12 Codec will enter to runtime suspend and suspend.
  13 That pin also will enter to D3. Don't need to enter to D3 by single pin.
  14 So, Disable power_save_node as default. It will avoid more issues.
  15 Windows Driver also has not this option at runtime PM.
  16
  17 Signed-off-by: Kailang Yang <kailang@realtek.com>
  18 Cc: <stable@vger.kernel.org>
  19 Signed-off-by: Takashi Iwai <tiwai@suse.de>
  20 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  21
  22 ---
  23  sound/pci/hda/patch_realtek.c |    2 +-
  24  1 file changed, 1 insertion(+), 1 deletion(-)
  25
  26 --- a/sound/pci/hda/patch_realtek.c
  27 +++ b/sound/pci/hda/patch_realtek.c
  28 @@ -6317,7 +6317,7 @@ static int patch_alc269(struct hda_codec
  29
  30         spec = codec->spec;
  31         spec->gen.shared_mic_vref_pin = 0x18;
  32 -       codec->power_save_node = 1;
  33 +       codec->power_save_node = 0;
  34
  35  #ifdef CONFIG_PM
  36         codec->patch_ops.suspend = alc269_suspend;