This is a note to let you know that I've just added the patch titled

ALSA: hda - fix headset mic detection issue on a Dell machine

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: alsa-hda-fix-headset-mic-detection-issue-on-a-dell-machine.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 285d5ddcffafa5d5e68c586f4c9eaa8b24a2897d Mon Sep 17 00:00:00 2001

From: Hui Wang hui.wang@canonical.com Date: Fri, 22 Dec 2017 11:17:45 +0800 Subject: ALSA: hda - fix headset mic detection issue on a Dell machine

From: Hui Wang hui.wang@canonical.com

commit 285d5ddcffafa5d5e68c586f4c9eaa8b24a2897d upstream.

It has the codec alc256, and add its pin definition to pin quirk table to let it apply ALC255_FIXUP_DELL1_MIC_NO_PRESENCE.

Signed-off-by: Hui Wang hui.wang@canonical.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- sound/pci/hda/patch_realtek.c | 5 +++++ 1 file changed, 5 insertions(+)

--- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5972,6 +5972,11 @@ static const struct snd_hda_pin_quirk al {0x1b, 0x01011020}, {0x21, 0x02211010}), SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, + {0x12, 0x90a60130}, + {0x14, 0x90170110}, + {0x1b, 0x01011020}, + {0x21, 0x0221101f}), + SND_HDA_PIN_QUIRK(0x10ec0256, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, {0x12, 0x90a60160}, {0x14, 0x90170120}, {0x21, 0x02211030}),

Patches currently in stable-queue which might be from hui.wang@canonical.com are

queue-4.9/alsa-hda-fix-headset-mic-detection-issue-on-a-dell-machine.patch