From: Hui Wang hui.wang@canonical.com
commit 2bf44e0ee95f39cc54ea1b942f0a027e0181ca4e upstream.
Recently we found the micmute led init state is not correct after freshly installing the ubuntu linux on a Lenovo AIO machine. The internal mic is not muted, but the micmute led is on and led mode is 'follow mute'. If we mute internal mic, the led is keeping on, then unmute the internal mic, the led is off. And from then on, the micmute led will work correctly.
So the micmute led init state is not correct. The led is controlled by codec gpio (ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY), in the patch_realtek, the gpio data is set to 0x4 initially and the led is on with this data. In the hda_generic, the led_value is set to 0 initially, suppose users set the 'capture switch' to on from user space and the micmute led should change to be off with this operation, but the check "if (val == spec->micmute_led.led_value)" in the call_micmute_led_update() will skip the led setting.
To guarantee the led state will be set by the 1st time of changing "Capture Switch", set -1 to the init led_value.
Cc: stable@vger.kernel.org Signed-off-by: Hui Wang hui.wang@canonical.com Link: https://lore.kernel.org/r/20210312041408.3776-1-hui.wang@canonical.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/pci/hda/hda_generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -4029,7 +4029,7 @@ int snd_hda_gen_add_micmute_led(struct h
spec->micmute_led.led_mode = MICMUTE_LED_FOLLOW_MUTE; spec->micmute_led.capture = 0; - spec->micmute_led.led_value = 0; + spec->micmute_led.led_value = -1; spec->micmute_led.old_hook = spec->cap_sync_hook; spec->micmute_led.update = hook; spec->cap_sync_hook = update_micmute_led;