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Date: Wed, 3 Apr 2024 13:23:23 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: open list <linux-kernel@...r.kernel.org>, 
	Linux Regressions <regressions@...ts.linux.dev>, lkft-triage@...ts.linaro.org, 
	linux-parisc <linux-parisc@...r.kernel.org>, Linux-sh list <linux-sh@...r.kernel.org>
Cc: "Paul E. McKenney" <paulmck@...nel.org>, Mel Gorman <mgorman@...hsingularity.net>, 
	Andrew Morton <akpm@...ux-foundation.org>, Rik van Riel <riel@...riel.com>, 
	"Matthew Wilcox (Oracle)" <willy@...radead.org>, Arnd Bergmann <arnd@...db.de>, 
	Dan Carpenter <dan.carpenter@...aro.org>, Anders Roxell <anders.roxell@...aro.org>
Subject: sh4: parisc: asm/cmpxchg.h:60:24: error: implicit declaration of
 function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]

The parisc and sh defconfig builds failed due to following build warnings
and errors on Linux next-20240402.

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

parisc:
  build:
    * gcc-11-tinyconfig - Failed
    * gcc-11-allnoconfig - Failed
    * gcc-11-defconfig - Failed

sh:
  build:
    * gcc-11-defconfig - Failed
    * gcc-11-dreamcast_defconfig - Failed
    * gcc-11-tinyconfig - Failed
    * gcc-11-shx3_defconfig - Failed
    * gcc-11-allnoconfig - Failed

In file included from arch/sh/include/asm/atomic.h:19,
                 from include/linux/atomic.h:7,
                 from include/asm-generic/bitops/lock.h:5,
                 from arch/sh/include/asm/bitops.h:63,
                 from include/linux/bitops.h:70,
                 from include/linux/log2.h:12,
                 from kernel/bounds.c:13:
arch/sh/include/asm/cmpxchg.h: In function '__cmpxchg':
arch/sh/include/asm/cmpxchg.h:60:24: error: implicit declaration of
function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]
   60 |                 return cmpxchg_emu_u8((volatile u8 *)ptr, old, new);
      |                        ^~~~~~~~~~~~~~
arch/sh/include/asm/cmpxchg.h:62:24: error: implicit declaration of
function 'cmpxchg_emu_u16' [-Werror=implicit-function-declaration]
   62 |                 return cmpxchg_emu_u16((volatile u16 *)ptr, old, new);
      |                        ^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

Steps to reproduce:
------
# tuxmake --runtime podman --target-arch sh --toolchain gcc-11
--kconfig defconfig

Links:
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/testrun/23264271/suite/build/test/gcc-11-defconfig/details/
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/testrun/23264273/suite/build/test/gcc-11-defconfig/details/

--
Linaro LKFT
https://lkft.linaro.org

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