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microblaze: uaccess: copy_to_user unification 

noMMU and MMU kernel will use copy copy_tofrom_user
asm implementation.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-03-22 15:52:53 +01:00
parent 0dcb409de7
commit cc5a428b7a
1 changed files with 16 additions and 9 deletions
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25
arch/microblaze/include/asm/uaccess.h
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@ -372,19 +372,28 @@ extern long __user_bad(void);
? __put_user((x), (ptr)) : -EFAULT; \ ? __put_user((x), (ptr)) : -EFAULT; \
}) })
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_from_user((to), (from), (n))
#define __copy_from_user_inatomic(to, from, n) \ #define __copy_from_user_inatomic(to, from, n) \
copy_from_user((to), (from), (n)) copy_from_user((to), (from), (n))
#define copy_to_user(to, from, n) \ #define __copy_to_user(to, from, n) \
(access_ok(VERIFY_WRITE, (to), (n)) ? \ __copy_tofrom_user((void __user *)(to), \
__copy_tofrom_user((void __user *)(to), \ (__force const void __user *)(from), (n))
(__force const void __user *)(from), (n)) \
: -EFAULT)
#define __copy_to_user(to, from, n) copy_to_user((to), (from), (n))
#define __copy_to_user_inatomic(to, from, n) copy_to_user((to), (from), (n)) #define __copy_to_user_inatomic(to, from, n) copy_to_user((to), (from), (n))
static inline long copy_to_user(void __user *to,
const void *from, unsigned long n)
{
might_sleep();
if (access_ok(VERIFY_WRITE, to, n))
return __copy_to_user(to, from, n);
else
return n;
}
#define copy_from_user(to, from, n) \ #define copy_from_user(to, from, n) \
(access_ok(VERIFY_READ, (from), (n)) ? \ (access_ok(VERIFY_READ, (from), (n)) ? \
__copy_tofrom_user((__force void __user *)(to), \ __copy_tofrom_user((__force void __user *)(to), \
@ -402,8 +411,6 @@ extern int __strnlen_user(const char __user *sstr, int len);
#endif /* CONFIG_MMU */ #endif /* CONFIG_MMU */
extern unsigned long __copy_tofrom_user(void __user *to,
const void __user *from, unsigned long size);
#endif /* __ASSEMBLY__ */ #endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */