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authorGuenter Roeck <linux@roeck-us.net>2016-09-17 12:57:24 -0700
committerSasha Levin <alexander.levin@verizon.com>2016-10-09 21:21:06 -0400
commit56991065c36aac44cc2b38dba6c1f038abcbfd8f (patch)
tree60f5af235f9c6a79b2f8ad714148c8ea6c8a5d09
parent2abcdcc42f4f030137ea36efd02ccf0e724dfb3d (diff)
openrisc: fix the fix of copy_from_user()
[ Upstream commit 8e4b72054f554967827e18be1de0e8122e6efc04 ] 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> Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
-rw-r--r--arch/openrisc/include/asm/uaccess.h2
1 files changed, 1 insertions, 1 deletions
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;