Commit b622b96d authored by Qing Zhang's avatar Qing Zhang Committed by Hongchen Zhang
Browse files

LoongArch: Requires __force attributes for any casts 

mainline inclusion
from mainline-v6.0-rc1
commit 5e8be07c
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5OHOB


CVE: NA

--------------------------------

This fix a warning when "make C=2":
arch/loongarch/kernel/ptrace.c: note: in included file (through include/linux/uaccess.h, include/linux/sched/task.h, include/linux/sched/signal.h, include/linux/ptrace.h, include/linux/audit.h):
./arch/loongarch/include/asm/uaccess.h:232:32: warning: incorrect type in argument 2 (different address spaces)
./arch/loongarch/include/asm/uaccess.h:232:32:    expected void const *from
./arch/loongarch/include/asm/uaccess.h:232:32:    got void const [noderef] __user *from

Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarQing Zhang <zhangqing@loongson.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent 46853a8b

arch/loongarch/include/asm/uaccess.h

+2 −2
Original line number Diff line number Diff line
@@ -273,13 +273,13 @@ extern unsigned long __copy_user(void *to, const void *from, __kernel_size_t n); 
static inline unsigned long __must_check

raw_copy_from_user(void *to, const void __user *from, unsigned long n)

{

	return __copy_user(to, from, n);

	return __copy_user(to, (__force const void *)from, n);

}



static inline unsigned long __must_check

raw_copy_to_user(void __user *to, const void *from, unsigned long n)

{

	return __copy_user(to, from, n);

	return __copy_user((__force void *)to, from, n);

}



#define INLINE_COPY_FROM_USER