ALSA: hda - Fix mute LED on HP laptops in runtime suspend

When HP laptops with mute and mic-record LEDs go to runtime suspend,
these LEDs are turned on forcibly no matter whether GPIO pis are on or
off.  This strange behavior seems triggered by resetting the HD-audio
bus link at azx_rutime_suspend().  So, just add a new hda_bus flag to
avoid the link reset at runtime suspend and set it for these HP
machines.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index fba0cef1c47f..69a549a82345 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2091,8 +2091,10 @@ static void stac92hd83xxx_fixup_hp_mic_led(struct hda_codec *codec,
 {
         struct sigmatel_spec *spec = codec->spec;
 
-        if (action == HDA_FIXUP_ACT_PRE_PROBE)
+        if (action == HDA_FIXUP_ACT_PRE_PROBE) {
                 spec->mic_mute_led_gpio = 0x08; /* GPIO3 */
+                codec->bus->avoid_link_reset = 1;
+        }
 }
 
 static void stac92hd83xxx_fixup_headset_jack(struct hda_codec *codec,