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microblaze: uaccess: fix copy_from_user macro 

copy_from_user macro also use copy_tofrom_user function

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-03-22 15:56:32 +01:00
parent cc5a428b7a
commit 4270690bd4
1 changed files with 14 additions and 9 deletions
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23
arch/microblaze/include/asm/uaccess.h
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@ -375,12 +375,24 @@ extern long __user_bad(void);
extern unsigned long __copy_tofrom_user(void __user *to,
const void __user *from, unsigned long size);
#define __copy_from_user(to, from, n) copy_from_user((to), (from), (n))
#define __copy_from_user(to, from, n) \
__copy_tofrom_user((__force void __user *)(to), \
(void __user *)(from), (n))
#define __copy_from_user_inatomic(to, from, n) \
copy_from_user((to), (from), (n))
static inline long copy_from_user(void *to,
const void __user *from, unsigned long n)
{
might_sleep();
if (access_ok(VERIFY_READ, from, n))
return __copy_from_user(to, from, n);
else
return n;
}
#define __copy_to_user(to, from, n) \
__copy_tofrom_user((void __user *)(to), \
__copy_tofrom_user((void __user *)(to), \
(__force const void __user *)(from), (n))
#define __copy_to_user_inatomic(to, from, n) copy_to_user((to), (from), (n))
@ -394,12 +406,6 @@ static inline long copy_to_user(void __user *to,
return n;
}
#define copy_from_user(to, from, n) \
(access_ok(VERIFY_READ, (from), (n)) ? \
__copy_tofrom_user((__force void __user *)(to), \
(void __user *)(from), (n)) \
: -EFAULT)
extern int __strncpy_user(char *to, const char __user *from, int len);
extern int __strnlen_user(const char __user *sstr, int len);
@ -411,7 +417,6 @@ extern int __strnlen_user(const char __user *sstr, int len);
#endif /* CONFIG_MMU */
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */