alpha: fix copy_from_user()

[ Upstream commit 2561d309dfd1555e781484af757ed0115035ddb3 ]

it should clear the destination even when access_ok() fails.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
1 file changed