[PATCH 2/7] m68k: use BUILD_BUG for passing invalid sizes to get_user/put_user

Christoph Hellwig
2021-07-09T07:02:06Z

Simplify the handling a bit by using the common helper instead of
referencing undefined symbols.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/m68k/include/asm/uaccess.h | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/m68k/include/asm/uaccess.h b/arch/m68k/include/asm/uaccess.h
index 610bfe8d64d5..01334a9658c4 100644
--- a/arch/m68k/include/asm/uaccess.h
+++ b/arch/m68k/include/asm/uaccess.h
@@ -39,9 +39,6 @@ static inline int access_ok(const void __user *addr,
#define MOVES "move"
#endif

-extern int __put_user_bad(void);
-extern int __get_user_bad(void);
-
#define __put_user_asm(res, x, ptr, bwl, reg, err) \
asm volatile ("\n" \
"1: "MOVES"."#bwl" %2,%1\n" \
@@ -105,8 +102,7 @@ asm volatile ("\n" \
break; \
} \
default: \
- __pu_err = __put_user_bad(); \
- break; \
+ BUILD_BUG(); \
} \
__pu_err; \
})
@@ -179,8 +175,7 @@ asm volatile ("\n" \
break; \
} \
default: \
- __gu_err = __get_user_bad(); \
- break; \
+ BUILD_BUG(); \
} \
__gu_err; \
})
--
2.30.2