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openrisc: switch to RAW_COPY_USER

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-03-22 13:13:15 -04:00
parent 6c36a4eb9a
commit ab89866be3
2 changed files with 7 additions and 22 deletions
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1
arch/openrisc/Kconfig
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@ -28,6 +28,7 @@ config OPENRISC
select OR1K_PIC select OR1K_PIC
select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1 select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
select NO_BOOTMEM select NO_BOOTMEM
select ARCH_HAS_RAW_COPY_USER
config MMU config MMU
def_bool y def_bool y

28
arch/openrisc/include/asm/uaccess.h
View File

@ -236,34 +236,18 @@ do { \
extern unsigned long __must_check extern unsigned long __must_check
__copy_tofrom_user(void *to, const void *from, unsigned long size); __copy_tofrom_user(void *to, const void *from, unsigned long size);
#define __copy_from_user(to, from, size) \
__copy_tofrom_user(to, from, size)
#define __copy_to_user(to, from, size) \
__copy_tofrom_user(to, from, size)
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
static inline unsigned long static inline unsigned long
copy_from_user(void *to, const void *from, unsigned long n) raw_copy_from_user(void *to, const void __user *from, unsigned long size)
{ {
unsigned long res = n; return __copy_tofrom_user(to, (__force const void *)from, size);
if (likely(access_ok(VERIFY_READ, from, n)))
res = __copy_tofrom_user(to, from, n);
if (unlikely(res))
memset(to + (n - res), 0, res);
return res;
} }
static inline unsigned long static inline unsigned long
copy_to_user(void *to, const void *from, unsigned long n) raw_copy_to_user(void *to, const void __user *from, unsigned long size)
{ {
if (likely(access_ok(VERIFY_WRITE, to, n))) return __copy_tofrom_user((__force void *)to, from, size);
n = __copy_tofrom_user(to, from, n);
return n;
} }
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
extern unsigned long __clear_user(void *addr, unsigned long size); extern unsigned long __clear_user(void *addr, unsigned long size);