linux-kernel - Re: [PATCH] mfd: simple-mfd-i2c: Fix linker error due to new mfd-core dependency

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Date:   Thu, 4 Nov 2021 14:08:59 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Robert Marko <robert.marko@...tura.hr>
Cc:     Tyler Hicks <tyhicks@...ux.microsoft.com>,
        Alistair Francis <alistair@...stair23.me>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mfd: simple-mfd-i2c: Fix linker error due to new
 mfd-core dependency

On Thu, 04 Nov 2021, Robert Marko wrote:

> On Thu, Nov 4, 2021 at 2:53 PM Tyler Hicks <tyhicks@...ux.microsoft.com> wrote:
> >
> > On 2021-11-04 08:24:28, Lee Jones wrote:
> > > On Wed, 03 Nov 2021, Tyler Hicks wrote:
> > >
> > > > Select CONFIG_MFD_CORE from CONFIG_MFD_SIMPLE_MFD_I2C, now that
> > > > simple-mfd-i2c.c calls devm_mfd_add_devices(), to fix the following
> > > > linker error:
> > > >
> > > >  ld: drivers/mfd/simple-mfd-i2c.o: in function `simple_mfd_i2c_probe':
> > > >  simple-mfd-i2c.c:(.text+0x62): undefined reference to `devm_mfd_add_devices'
> > > >  make: *** [Makefile:1187: vmlinux] Error 1
> > > >
> > > > Fixes: c753ea31781a ("mfd: simple-mfd-i2c: Add support for registering devices via MFD cells")
> > > > Cc: stable@...r.kernel.org # 5.15.x
> > > > Signed-off-by: Tyler Hicks <tyhicks@...ux.microsoft.com>
> > > > ---
> > > >  drivers/mfd/Kconfig | 1 +
> > > >  1 file changed, 1 insertion(+)
> > >
> > > Looks like the same change that has already been applied.
> > >
> > > Could you rebase on top of the MFD tree please?
> >
> > Ah, that commit wasn't in for-mfd-next when I wrote up this patch
> > yesterday.
> >
> > I think that the Fixes line in that patch is wrong as I didn't see this
> > issue in 5.10 and reverting c753ea31781a fixes the build failure.
> 
> Hi Tyler, I would agree with you on the fixes tag.
> I messed that one up, c753ea31781a is the correct one.

All good.  I fixed it for you.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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