[alsa-devel] [PATCH] ALSA: hda - add a new condition to check if it is thinkpad

[Hui Wang]

Latest Thinkpad laptops use the HKEY_HID LEN0268 instead of the
LEN0068, as a result neither audio mute led nor mic mute led can work
any more.

After adding the new HKEY_HID into the is_thinkpad(), both of them
works well as before.

Cc: <stable at vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang at canonical.com>
---
And the fix for thinkpad_acpi.c already sent out, and got ACK,
please refer to:
https://sourceforge.net/p/ibm-acpi/mailman/message/35478616/

Acctually we don't need to wait thinkpad_acpi.c to be patched first,
since no matter the thinkpad_acpi.c merge that patch or not, the led
control function is always provided by thinkpad_acpi.c, the new
HKEY_ID only affects the automatic insmod for thinkpad_acpi.ko.

 sound/pci/hda/thinkpad_helper.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/pci/hda/thinkpad_helper.c b/sound/pci/hda/thinkpad_helper.c
index 6a23302..4d9d320 100644
--- a/sound/pci/hda/thinkpad_helper.c
+++ b/sound/pci/hda/thinkpad_helper.c
@@ -13,7 +13,8 @@
 static bool is_thinkpad(struct hda_codec *codec)
 {
 	return (codec->core.subsystem_id >> 16 == 0x17aa) &&
-	       (acpi_dev_found("LEN0068") || acpi_dev_found("IBM0068"));
+	       (acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") ||
+		acpi_dev_found("IBM0068"));
 }
 
 static void update_tpacpi_mute_led(void *private_data, int enabled)
-- 
1.9.1