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alpha: fix copy_from_user()
[pandora-kernel.git]
/
arch
/
alpha
/
include
/
asm
/
uaccess.h
diff --git
a/arch/alpha/include/asm/uaccess.h
b/arch/alpha/include/asm/uaccess.h
index
b49ec2f
..
3cd6132
100644
(file)
--- a/
arch/alpha/include/asm/uaccess.h
+++ b/
arch/alpha/include/asm/uaccess.h
@@
-371,14
+371,6
@@
__copy_tofrom_user_nocheck(void *to, const void *from, long len)
return __cu_len;
}
return __cu_len;
}
-extern inline long
-__copy_tofrom_user(void *to, const void *from, long len, const void __user *validate)
-{
- if (__access_ok((unsigned long)validate, len, get_fs()))
- len = __copy_tofrom_user_nocheck(to, from, len);
- return len;
-}
-
#define __copy_to_user(to,from,n) \
({ \
__chk_user_ptr(to); \
#define __copy_to_user(to,from,n) \
({ \
__chk_user_ptr(to); \
@@
-393,17
+385,22
@@
__copy_tofrom_user(void *to, const void *from, long len, const void __user *vali
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
-
extern inline long
copy_to_user(void __user *to, const void *from, long n)
{
extern inline long
copy_to_user(void __user *to, const void *from, long n)
{
- return __copy_tofrom_user((__force void *)to, from, n, to);
+ if (likely(__access_ok((unsigned long)to, n, get_fs())))
+ n = __copy_tofrom_user_nocheck((__force void *)to, from, n);
+ return n;
}
extern inline long
copy_from_user(void *to, const void __user *from, long n)
{
}
extern inline long
copy_from_user(void *to, const void __user *from, long n)
{
- return __copy_tofrom_user(to, (__force void *)from, n, from);
+ if (likely(__access_ok((unsigned long)from, n, get_fs())))
+ n = __copy_tofrom_user_nocheck(to, (__force void *)from, n);
+ else
+ memset(to, 0, n);
+ return n;
}
extern void __do_clear_user(void);
}
extern void __do_clear_user(void);