Re: ThinkPad T480s & LED_MUTE, LED_MICMUTE

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On Tuesday 19 June 2018 10:42:12 Takashi Iwai wrote:
> On Tue, 19 Jun 2018 10:37:12 +0200,
> Pali Rohár wrote:
> > Interesting is this part:
> > 
> > $ head /proc/asound/card0/codec#0
> > Codec: Realtek ALC257
> > Address: 0
> > AFG Function Id: 0x1 (unsol 1)
> > Vendor Id: 0x10ec0257
> > Subsystem Id: 0x17aa2258
> > Revision Id: 0x100001
> > No Modem Function Group found
> > Default PCM:
> >     rates [0x560]: 44100 48000 96000 192000
> >         bits [0xe]: 16 20 24
> > 
> > It uses vendor id 0x10ec0257 and support for it was added into
> > snd-hda-codec-realtek in commit f429e7e494 which was introduced in
> > version v4.15.
> > 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f429e7e494afaded76e62c6f98211a635aa03098
> > 
> > I applied this patch to Debian's 4.9 kernel and mute & mic mute leds
> > started working. This one patch was enough.
> > 
> > Takashi, it is possible to backport this patch into -stable trees?
> 
> It has already a Cc-to-stable, so it should have been backported.
> Maybe it wasn't applicable at that time due to lack of other dependent
> patches...
> 
> In anyway, feel free to ping Greg for including it to 4.9.x if it
> works for you now.

I sent email to Greg, but it was eaten by "email-bot of Greg
Kroah-Hartman's inbox". So I sent another patch email to stable ML.

-- 
Pali Rohár
pali.rohar@xxxxxxxxx

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