diff options
authorGreg Ungerer <gerg@uclinux.org>2011-02-03 21:31:20 +1000
committerGreg Ungerer <gerg@uclinux.org>2011-02-16 09:42:24 +1000
commitf9d693d237a173915fcfbd86b28753f93b7d142f (patch)
parentb3e338de7e11d1e5bc4eca12833d894d1838b510 (diff)
m68k: remove arch specific non-optimized memcmp()
The m68k arch implements its own memcmp() function. It is not optimized in any way (it is the most strait forward coding of memcmp you can get). Remove it and use the kernels standard memcmp() implementation. This also goes part of the way to fixing a regression caused by commit ea61bc461d09e8d331a307916530aaae808c72a2 ("m68k/m68knommu: merge MMU and non-MMU string.h"), which breaks non-coldfire non-mmu builds (which is the 68x328 and 68360 families). They currently have no memcmp() function defined, since there is none in the m68knommu/lib functions. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2 files changed, 1 insertions, 14 deletions
diff --git a/arch/m68k/include/asm/string.h b/arch/m68k/include/asm/string.h
index 65b131282837..ffc3c3f61243 100644
--- a/arch/m68k/include/asm/string.h
+++ b/arch/m68k/include/asm/string.h
@@ -102,11 +102,9 @@ static inline int strcmp(const char *cs, const char *ct)
extern void *memmove(void *, const void *, __kernel_size_t);
+#endif /* CONFIG_COLDFIRE */
-extern int memcmp(const void *, const void *, __kernel_size_t);
#define memcmp(d, s, n) __builtin_memcmp(d, s, n)
-#endif /* CONFIG_COLDFIRE */
extern void *memset(void *, int, __kernel_size_t);
diff --git a/arch/m68k/lib/string.c b/arch/m68k/lib/string.c
index 4253f870e54f..d399c5f25636 100644
--- a/arch/m68k/lib/string.c
+++ b/arch/m68k/lib/string.c
@@ -243,14 +243,3 @@ void *memmove(void *dest, const void *src, size_t n)
return xdest;
-int memcmp(const void *cs, const void *ct, size_t count)
- const unsigned char *su1, *su2;
- for (su1 = cs, su2 = ct; count > 0; ++su1, ++su2, count--)
- if (*su1 != *su2)
- return *su1 < *su2 ? -1 : +1;
- return 0;