linux-kernel - Re: [PATCH] ACPI: EC: Relax sanity check of the ECDT ID string

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Message-ID: <CAJZ5v0g0vjP_ST2xnDnFAmDXKR9oPn5t0sfQqamDCNwUjJt-xg@mail.gmail.com>
Date: Tue, 12 Aug 2025 15:32:22 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Ilya K <me@...ti.me>
Cc: Armin Wolf <W_Armin@....de>, rafael@...nel.org, lenb@...nel.org, 
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ACPI: EC: Relax sanity check of the ECDT ID string

On Tue, Jul 29, 2025 at 9:01 AM Ilya K <me@...ti.me> wrote:
>
> On 2025-07-29 09:20, Armin Wolf wrote:
> > It turns out that the ECDT table inside the ThinkBook 14 G7 IML
> > contains a valid EC description but an invalid ID string
> > ("_SB.PC00.LPCB.EC0"). Ignoring this ECDT based on the invalid
> > ID string prevents the kernel from detecting the built-in touchpad,
> > so relax the sanity check of the ID string and only reject ECDTs
> > with empty ID strings.
> >
> > Compile-tested only.
> >
> > Reported-by: Ilya K <me@...ti.me>
> > Fixes: 7a0d59f6a913 ("ACPI: EC: Ignore ECDT tables with an invalid ID string")
> > Signed-off-by: Armin Wolf <W_Armin@....de>
> > ---
> >  drivers/acpi/ec.c | 10 +++++++---
> >  1 file changed, 7 insertions(+), 3 deletions(-)
> >
>
> Thanks, this works!
>
> Tested-by: Ilya K <me@...ti.me>

Applied as 6.17-rc material and sorry for the delay (I was offline).

Thanks!