From: Guenter Roeck <linux@roeck-us.net>
To: Jonas Bonn <jonas@southpole.se>
Cc: linux-kernel@vger.kernel.org, Guenter Roeck <linux@roeck-us.net>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: [PATCH] openrisc: fix the fix of copy_from_user()
Date: Sat, 17 Sep 2016 13:01:32 -0700 [thread overview]
Message-ID: <1474142492-3667-1-git-send-email-linux@roeck-us.net> (raw)
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@zeniv.linux.org.uk>
Fixes: acb2505d0119 ("openrisc: fix copy_from_user()")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
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 cbad29b5a131..5cc6b4f1b795 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;
--
2.5.0
reply other threads:[~2016-09-17 20:01 UTC|newest]
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