ALSA: hda: set mute led polarity for laptops with buggy BIOS based on SSID

commit a6a600d10aaddf1da38053c4c6b64f50f56176e6 upstream.

HP laptop models with buggy BIOS are apparently frequent, including
machines with different codecs. Set the polarity of the mute led based
on the SSID and include an entry for the HP Mini 110-3100.

Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@sagui.org>
Tested-by: Predrag Ivanovic <predivan@open.telekom.rs>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 2141cab..ccdac27 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4952,7 +4952,14 @@ static int find_mute_led_gpio(struct hda_codec *codec, int default_polarity)
                        /* BIOS bug: unfilled OEM string */
                        if (strstr(dev->name, "HP_Mute_LED_P_G")) {
                                set_hp_led_gpio(codec);
-                               spec->gpio_led_polarity = 1;
+                               switch (codec->subsystem_id) {
+                               case 0x103c148a:
+                                       spec->gpio_led_polarity = 0;
+                                       break;
+                               default:
+                                       spec->gpio_led_polarity = 1;
+                                       break;
+                               }
                                return 1;
                        }
                }