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MIPS: Define __arch_swab64 for all mips r2 cpus 

Some CPUs implement mipsr2, but because they are a super-set of mips64r2 do
not define CONFIG_CPU_MIPS64_R2.  Cavium OCTEON falls into this category.
We would still like to use the optimized implementation, so since we have
already checked for CONFIG_CPU_MIPSR2, checking for CONFIG_64BIT instead of
CONFIG_CPU_MIPS64_R2 is sufficient.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2009-06-29 09:54:15 -07:00 committed by Ralf Baechle
parent 27fdd325da
commit b53d4d1f8d
1 changed files with 6 additions and 2 deletions
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8
arch/mips/include/asm/swab.h
View File

@ -38,7 +38,11 @@ static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
}
#define __arch_swab32 __arch_swab32
#ifdef CONFIG_CPU_MIPS64_R2
/*
* Having already checked for CONFIG_CPU_MIPSR2, enable the
* optimized version for 64-bit kernel on r2 CPUs.
*/
#ifdef CONFIG_64BIT
static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
{
__asm__(
@ -50,6 +54,6 @@ static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
return x;
}
#define __arch_swab64 __arch_swab64
#endif /* CONFIG_CPU_MIPS64_R2 */
#endif /* CONFIG_64BIT */
#endif /* CONFIG_CPU_MIPSR2 */
#endif /* _ASM_SWAB_H */