staging: fsl-mc: fix resource_size.cocci warnings

 Use resource_size function on resource object
 instead of explicit computation.

Generated by: scripts/coccinelle/api/resource_size.cocci

Fixes: a037b7ec2eb7 ("staging: fsl-mc: allow the driver compile multi-arch")
CC: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/fsl-mc/bus/mc-io.c b/drivers/staging/fsl-mc/bus/mc-io.c
index 4e6f99a62cf00f5e582545164ee3dc2b902975a5..f65c23ce83f169bbc160df503e8dcf94a8f67c59 100644 (file)
--- a/drivers/staging/fsl-mc/bus/mc-io.c
+++ b/drivers/staging/fsl-mc/bus/mc-io.c
@@ -242,8 +242,7 @@ int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
                goto error_cleanup_resource;
 
        mc_portal_phys_addr = dpmcp_dev->regions[0].start;
-       mc_portal_size = dpmcp_dev->regions[0].end -
-                        dpmcp_dev->regions[0].start + 1;
+       mc_portal_size = resource_size(dpmcp_dev->regions);
 
        if (WARN_ON(mc_portal_size != mc_bus_dev->mc_io->portal_size))
                goto error_cleanup_resource;