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>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index fba0cef..69a549a 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2091,8 +2091,10 @@
{
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,