From: Guenter Roeck <linux@xxxxxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 8e4b72054f554967827e18be1de0e8122e6efc04 upstream.
Since commit acb2505d0119 ("openrisc: fix copy_from_user()"),
copy_from_user() returns the number of bytes requested, not the
number of bytes not copied.
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Fixes: acb2505d0119 ("openrisc: fix copy_from_user()")
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
arch/openrisc/include/asm/uaccess.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index 908c0904bdd6..d441480a4af4 100644
--- 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;
--
2.10.0
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html