linux-kernel - Re: [PATCH] unicore32: fix build error for find bitops

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Date:	Thu, 9 Jun 2011 20:32:40 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	GuanXuetao <gxt@...c.pku.edu.cn>
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, greg@...ah.com
Subject: Re: [PATCH] unicore32: fix build error for find bitops

2011/6/9 GuanXuetao <gxt@...c.pku.edu.cn>:
> From: Guan Xuetao <gxt@...c.pku.edu.cn>
>
> Remove the __uc32_ prefix in find bitops functions.
> see commit <19de85ef574c3a2182e3ccad9581805052f14946>
>  bitops: add #ifndef for each of find bitops
>
> Signed-off-by: Guan Xuetao <gxt@...c.pku.edu.cn>
> Cc: Akinobu Mita <akinobu.mita@...il.com>
> ---
>  arch/unicore32/include/asm/bitops.h |    6 ------
>  arch/unicore32/kernel/ksyms.c       |    4 ++--
>  arch/unicore32/lib/findbit.S        |   14 ++++++++------
>  3 files changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/arch/unicore32/include/asm/bitops.h b/arch/unicore32/include/asm/bitops.h
> index 1628a63..a9653f0 100644
> --- a/arch/unicore32/include/asm/bitops.h
> +++ b/arch/unicore32/include/asm/bitops.h
> @@ -13,12 +13,6 @@
>  #ifndef __UNICORE_BITOPS_H__
>  #define __UNICORE_BITOPS_H__
>
> -#define find_next_bit          __uc32_find_next_bit
> -#define find_next_zero_bit     __uc32_find_next_zero_bit
> -
> -#define find_first_bit         __uc32_find_first_bit
> -#define find_first_zero_bit    __uc32_find_first_zero_bit
> -

Is this patch really fix the build error?

If these find_*_bit macros are removed, vmlinux will have multiple
definisions of find_*_bit. Because lib/find_next_bit.c is built
unconditionally after the commit 63e424c84429903c92a0f1e9654c31ccaf6694d0
("arch: remove CONFIG_GENERIC_FIND_{NEXT_BIT,BIT_LE,LAST_BIT}".
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