From: Jiang Liu <jiang.liu@linux.intel.com>Date: Thu, 9 Jul 2015 16:00:42 +0800> Use helper functions to access fields in struct msi_desc, so we could> easily refine struct msi_desc later.> > Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>Acked-by: David S. Miller <davem@davemloft.net>