linux-kernel - Re: stable-rc/queue/6.14: S390: devres.h:111:16: error: implicit declaration of function 'IOMEM_ERR_PTR' [-Werror=implicit-function-declaration]

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Message-ID: <2025052753-enticing-exceeding-a8ce@gregkh>
Date: Tue, 27 May 2025 16:46:58 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>,
	linux-stable <stable@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>,
	linux-s390@...r.kernel.org, devel@...verdev.osuosl.org,
	lkft-triage@...ts.linaro.org, Sasha Levin <sashal@...nel.org>,
	Anders Roxell <anders.roxell@...aro.org>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Alexander Gordeev <agordeev@...ux.ibm.com>
Subject: Re: stable-rc/queue/6.14: S390: devres.h:111:16: error: implicit
 declaration of function 'IOMEM_ERR_PTR'
 [-Werror=implicit-function-declaration]

On Mon, May 26, 2025 at 04:59:54PM +0200, Arnd Bergmann wrote:
> On Mon, May 26, 2025, at 16:49, Naresh Kamboju wrote:
> > Regressions on S390 tinyconfig builds failing with gcc-13, gcc-8 and
> > clang-20 and clang-nightly tool chains on the stable-rc/queue/6.14.
> >
> > Regression Analysis:
> >  - New regression? Yes
> >  - Reproducible? Yes
> >
> > Build regression: S390 tinyconfig devres.h 'devm_ioremap_resource'
> > implicit declaration of function 'IOMEM_ERR_PTR'
> >
> > Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> >
> >
> > Build log:
> > ---------
> > In file included from include/linux/device.h:31,
> >                  from include/linux/node.h:18,
> >                  from include/linux/cpu.h:17,
> >                  from arch/s390/kernel/traps.c:28:
> > include/linux/device/devres.h: In function 'devm_ioremap_resource':
> > include/linux/device/devres.h:111:16: error: implicit declaration of
> > function 'IOMEM_ERR_PTR' [-Werror=implicit-function-declaration]
> >   111 |         return IOMEM_ERR_PTR(-EINVAL);
> >       |                ^~~~~~~~~~~~~
> 
> The backport of 
> a21cad931276 ("driver core: Split devres APIs to device/devres.h")
> also needs a backport of
> 18311a766c58 ("err.h: move IOMEM_ERR_PTR() to err.h")

Now queued up, thanks.

greg k-h