xen/grant-table: constify gnttab_ops structure

The gnttab_ops structure is never modified, so declare it as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>

diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index c49f79e..effbaf9 100644 (file)
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -128,7 +128,7 @@ struct unmap_refs_callback_data {
        int result;
 };
 
-static struct gnttab_ops *gnttab_interface;
+static const struct gnttab_ops *gnttab_interface;
 
 static int grant_table_version;
 static int grefs_per_grant_frame;
@@ -1013,7 +1013,7 @@ static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
        return rc;
 }
 
-static struct gnttab_ops gnttab_v1_ops = {
+static const struct gnttab_ops gnttab_v1_ops = {
        .map_frames                     = gnttab_map_frames_v1,
        .unmap_frames                   = gnttab_unmap_frames_v1,
        .update_entry                   = gnttab_update_entry_v1,