linux-kernel - Re: [PATCH v2 4/6] arm: use asm-generic/bitops/le.h

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Date:	Wed, 27 Apr 2011 10:19:49 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	akpm@...ux-foundation.org, arnd@...db.de,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 4/6] arm: use asm-generic/bitops/le.h

On Tue, Apr 26, 2011 at 10:23:41PM +0900, Akinobu Mita wrote:
> The previous style change enables to use asm-generic/bitops/le.h
> on arm.
> 
> Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
> Cc: Russell King <linux@....linux.org.uk>

Acked-by: Russell King <rmk+kernel@....linux.org.uk>

> Cc: linux-arm-kernel@...ts.infradead.org
> ---
> 
> No change from previous submission
> 
>  arch/arm/include/asm/bitops.h |   43 ++++------------------------------------
>  1 files changed, 5 insertions(+), 38 deletions(-)
> 
> diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
> index 18a024b..b4892a0 100644
> --- a/arch/arm/include/asm/bitops.h
> +++ b/arch/arm/include/asm/bitops.h
> @@ -203,8 +203,6 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
>  #define find_first_bit(p,sz)		_find_first_bit_le(p,sz)
>  #define find_next_bit(p,sz,off)		_find_next_bit_le(p,sz,off)
>  
> -#define WORD_BITOFF_TO_LE(x)		((x))
> -
>  #else
>  /*
>   * These are the big endian, atomic definitions.
> @@ -214,8 +212,6 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
>  #define find_first_bit(p,sz)		_find_first_bit_be(p,sz)
>  #define find_next_bit(p,sz,off)		_find_next_bit_be(p,sz,off)
>  
> -#define WORD_BITOFF_TO_LE(x)		((x) ^ 0x18)
> -
>  #endif
>  
>  #if __LINUX_ARM_ARCH__ < 5
> @@ -287,40 +283,7 @@ static inline int fls(int x)
>  #include <asm-generic/bitops/hweight.h>
>  #include <asm-generic/bitops/lock.h>
>  
> -static inline void __set_bit_le(int nr, void *addr)
> -{
> -	__set_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> -
> -static inline void __clear_bit_le(int nr, void *addr)
> -{
> -	__clear_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> -
> -static inline int __test_and_set_bit_le(int nr, void *addr)
> -{
> -	return __test_and_set_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> -
> -static inline int test_and_set_bit_le(int nr, void *addr)
> -{
> -	return test_and_set_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> -
> -static inline int __test_and_clear_bit_le(int nr, void *addr)
> -{
> -	return __test_and_clear_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> -
> -static inline int test_and_clear_bit_le(int nr, void *addr)
> -{
> -	return test_and_clear_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> -
> -static inline int test_bit_le(int nr, const void *addr)
> -{
> -	return test_bit(WORD_BITOFF_TO_LE(nr), addr);
> -}
> +#ifdef __ARMEB__
>  
>  static inline int find_first_zero_bit_le(const void *p, unsigned size)
>  {
> @@ -340,6 +303,10 @@ static inline int find_next_bit_le(const void *p, int size, int offset)
>  }
>  #define find_next_bit_le find_next_bit_le
>  
> +#endif
> +
> +#include <asm-generic/bitops/le.h>
> +
>  /*
>   * Ext2 is defined to use little-endian byte ordering.
>   */
> -- 
> 1.7.4.4
> 
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