linux-kernel - Re: powerpc: fix build failure by disabling attribute-alias warning in pci

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Message-Id: <410b7p2cVbz9s08@ozlabs.org>
Date:   Wed,  6 Jun 2018 01:19:34 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@....fr>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: powerpc: fix build failure by disabling attribute-alias warning in pci_32

On Tue, 2018-06-05 at 06:57:43 UTC, Christophe Leroy wrote:
> Commit 2479bfc9bc600 ("powerpc: Fix build by disabling attribute-alias
> warning for SYSCALL_DEFINEx") forgot arch/powerpc/kernel/pci_32.c
> 
> Latest GCC version emit the following warnings
> 
> As arch/powerpc code is built with -Werror, this breaks build with
> GCC 8.1
> 
> This patch inhibits this warning
> 
> In file included from arch/powerpc/kernel/pci_32.c:14:
> ./include/linux/syscalls.h:233:18: error: 'sys_pciconfig_iobase' alias between functions of incompatible types 'long int(long int,  long unsigned int,  long unsigned int)' and 'long int(long int,  long int,  long int)' [-Werror=attribute-alias]
>   asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
>                   ^~~
> ./include/linux/syscalls.h:222:2: note: in expansion of macro '__SYSCALL_DEFINEx'
>   __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
>   ^~~~~~~~~~~~~~~~~
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/415520373975d2eba565c256d2cad8

cheers