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m68k: Remove inline strlen() implementation

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GCC can replace a strncat() call with constant second argument into a
strlen + store, which results in a link error:

ERROR: "strlen" [net/ipv4/ip_tunnel.ko] undefined!

The inline function is a simple for loop in C. Other architectures
either use an asm optimized variant, or use the generic function from
lib/string.c.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Michal Marek 2013-04-10 16:45:21 +02:00 committed by Geert Uytterhoeven
parent 01a18d1687
commit e00c73ee05
2 changed files with 1 additions and 15 deletions
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14
arch/m68k/include/asm/string.h
View File

@ -4,15 +4,6 @@
#include <linux/types.h>
#include <linux/compiler.h>
static inline size_t __kernel_strlen(const char *s)
{
const char *sc;
for (sc = s; *sc++; )
;
return sc - s - 1;
}
static inline char *__kernel_strcpy(char *dest, const char *src)
{
char *xdest = dest;
@ -27,11 +18,6 @@ static inline char *__kernel_strcpy(char *dest, const char *src)
#ifndef __IN_STRING_C
#define __HAVE_ARCH_STRLEN
#define strlen(s) (__builtin_constant_p(s) ? \
__builtin_strlen(s) : \
__kernel_strlen(s))
#define __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char *s, size_t count)
{

2
arch/m68k/lib/string.c
View File

@ -17,6 +17,6 @@ EXPORT_SYMBOL(strcpy);
char *strcat(char *dest, const char *src)
{
return __kernel_strcpy(dest + __kernel_strlen(dest), src);
return __kernel_strcpy(dest + strlen(dest), src);
}
EXPORT_SYMBOL(strcat);