platform_get_resource() may return null, so although it seems it will never
do so here unless there's a bug elsewhere, it does no harm to be defensive
and test.
Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NMagnus Damm <magnus.damm@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>