linux-kernel - Re: [PATCH for 6.1/6.6] platform/loongarch: laptop: Fix build error due to backport

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Message-ID: <CAAhV-H4S=z5O0+pq-x9X4-VjYsJQVxib+V-35g50WeaivryHLA@mail.gmail.com>
Date: Sun, 22 Jun 2025 21:11:44 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Huacai Chen <chenhuacai@...ngson.cn>, Sasha Levin <sashal@...nel.org>, 
	Xuerui Wang <kernel@...0n.name>, stable@...r.kernel.org, ziyao@...root.org, 
	linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev
Subject: Re: [PATCH for 6.1/6.6] platform/loongarch: laptop: Fix build error
 due to backport

On Sun, Jun 22, 2025 at 9:10 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Sun, Jun 22, 2025 at 07:01:48PM +0800, Huacai Chen wrote:
> > In 6.1/6.6 there is no BACKLIGHT_POWER_ON definition so a build error
> > occurs due to recently backport:
> >
> >   CC      drivers/platform/loongarch/loongson-laptop.o
> > drivers/platform/loongarch/loongson-laptop.c: In function 'laptop_backlight_register':
> > drivers/platform/loongarch/loongson-laptop.c:428:23: error: 'BACKLIGHT_POWER_ON' undeclared (first use in this function)
> >   428 |         props.power = BACKLIGHT_POWER_ON;
> >       |                       ^~~~~~~~~~~~~~~~~~
> >
> > Use FB_BLANK_UNBLANK instead which has the same meaning.
> >
> > Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
> > ---
> >  drivers/platform/loongarch/loongson-laptop.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
>
> What commit id is this fixing?

commit 53c762b47f726e4079a1f06f684bce2fc0d56fba upstream.

>
> thanks,
>
> greg k-h