tree bf9e63aa2829e06b7ac29d125d7db8712ae850fd
parent 972ec3510330c9d639c0dd72960e9aa02915855c
author Michael S. Tsirkin <mst@redhat.com> 1456674249 +0200
committer Wim Van Sebroeck <wim@iguana.be> 1456842582 +0100

watchdog: rc32434_wdt: fix ioctl error handling

Calling return copy_to_user(...) in an ioctl will not do the right thing
if there's a pagefault: copy_to_user returns the number of bytes not
copied in this case.

Fix up watchdog/rc32434_wdt to do
	return copy_to_user(...)) ?  -EFAULT : 0;

instead.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>