Commit ad3242a9acaa for kernel
commit ad3242a9acaa01cc9ecc6e483341697ca4f77461
Author: Kees Cook <kees@kernel.org>
Date: Mon Mar 23 01:16:06 2026 +0000
m68k: Remove arch-specific strncpy() implementation
strncpy() has no remaining callers in the kernel[1]. Remove the
m68k-specific inline assembly implementation and __HAVE_ARCH_STRNCPY
define, falling back to the generic version in lib/string.c.
Link: https://github.com/KSPP/linux/issues/90 [1]
Signed-off-by: Kees Cook <kees@kernel.org>
diff --git a/arch/m68k/include/asm/string.h b/arch/m68k/include/asm/string.h
index 760cc13acdf4..ae6a6b51ad07 100644
--- a/arch/m68k/include/asm/string.h
+++ b/arch/m68k/include/asm/string.h
@@ -21,23 +21,6 @@ static inline size_t strnlen(const char *s, size_t count)
return sc - s;
}
-#define __HAVE_ARCH_STRNCPY
-static inline char *strncpy(char *dest, const char *src, size_t n)
-{
- char *xdest = dest;
-
- asm volatile ("\n"
- " jra 2f\n"
- "1: move.b (%1),(%0)+\n"
- " jeq 2f\n"
- " addq.l #1,%1\n"
- "2: subq.l #1,%2\n"
- " jcc 1b\n"
- : "+a" (dest), "+a" (src), "+d" (n)
- : : "memory");
- return xdest;
-}
-
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *, const void *, __kernel_size_t);