linux-kernel - Re: sh4: parisc: asm/cmpxchg.h:60:24: error: implicit declaration of function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]

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Date: Wed, 3 Apr 2024 13:52:05 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: 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>,
 "Paul E. McKenney" <paulmck@...nel.org>, Mel Gorman
 <mgorman@...hsingularity.net>, 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: Re: sh4: parisc: asm/cmpxchg.h:60:24: error: implicit declaration
 of function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]

On Wed, 3 Apr 2024 13:23:23 +0530 Naresh Kamboju <naresh.kamboju@...aro.org> wrote:

> 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

Is this a new failure?  If so, can we please identify a suitable Fixes: target?