openrisc: fix the fix of copy_from_user()

Since commit acb2505 ("openrisc: fix copy_from_user()"), copy_from_user() returns the number of bytes requested, not the number of bytes not copied. Cc: Al Viro <[email protected]> Fixes: acb2505 ("openrisc: fix copy_from_user()") Signed-off-by: Guenter Roeck <[email protected]>
huntrar · Sep 18, 2016 · 8e4b720 · 8e4b720
1 parent 65c0044
commit 8e4b720
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
@@ -276,7 +276,7 @@ copy_from_user(void *to, const void *from, unsigned long n)
 	unsigned long res = n;
 
 	if (likely(access_ok(VERIFY_READ, from, n)))
-		n = __copy_tofrom_user(to, from, n);
+		res = __copy_tofrom_user(to, from, n);
 	if (unlikely(res))
 		memset(to + (n - res), 0, res);
 	return res;