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Date: Fri, 22 Dec 2023 12:27:58 +1100
From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Lee Jones <lee@kernel.org>
Cc: Thierry Reding <thierry.reding@gmail.com>, Sean Young <sean@mess.org>,
 Flavio Suligoi <f.suligoi@asem.it>, Linux Kernel Mailing List
 <linux-kernel@vger.kernel.org>, Linux Next Mailing List
 <linux-next@vger.kernel.org>
Subject: Re: (subset) linux-next: build failure after merge of the pwm tree
Message-ID: <20231222122758.24f26379@canb.auug.org.au>
In-Reply-To: <ZYSFUZf8NcK5vvLv@orome.fritz.box>
References: <20231221165805.0c4771c1@canb.auug.org.au>
	<170316329164.542553.8341559295114557258.b4-ty@kernel.org>
	<20231221125801.GG10102@google.com>
	<ZYSFUZf8NcK5vvLv@orome.fritz.box>
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Hi all,

On Thu, 21 Dec 2023 19:34:57 +0100 Thierry Reding <thierry.reding@gmail.com=
> wrote:
>
> On Thu, Dec 21, 2023 at 12:58:01PM +0000, Lee Jones wrote:
> > On Thu, 21 Dec 2023, Lee Jones wrote:
> >  =20
> > > On Thu, 21 Dec 2023 16:58:05 +1100, Stephen Rothwell wrote: =20
> > > > After merging the backlight tree, today's linux-next build (x86_64
> > > > allmodconfig) failed like this:
> > > >=20
> > > > drivers/video/backlight/mp3309c.c: In function 'mp3309c_bl_update_s=
tatus':
> > > > drivers/video/backlight/mp3309c.c:134:23: error: implicit declarati=
on of function 'pwm_apply_state'; did you mean 'pwm_apply_args'? [-Werror=
=3Dimplicit-function-declaration]
> > > >   134 |                 ret =3D pwm_apply_state(chip->pwmd, &pwmsta=
te);
> > > >       |                       ^~~~~~~~~~~~~~~
> > > >       |                       pwm_apply_args
> > > >=20
> > > > [...] =20
> > >=20
> > > Applied, thanks!
> > >=20
> > > [1/1] linux-next: build failure after merge of the pwm tree
> > >       commit: f7baa9ccef93ba1c36a8ecf58c2f4e86fb3181b9 =20
> >=20
> > Actually it's:
> >=20
> >   f7baa9ccef93b ("backlight: mp3309c: Rename  pwm_apply_state() to pwm_=
apply_might_sleep()")
> >=20
> > But don't bank on the commit ID staying the same. =20
>=20
> This is likely going to break the build on your branch because
> pwm_apply_might_sleep() is only available in the PWM tree right now. In

And break it did (since I merge the backlight tree before the pwm
tree), so I used the backlight tree from 20231221.

--=20
Cheers,
Stephen Rothwell

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