xen: gntdev: fix build warning

addr is actually a virtual address so use an unsigned long. Fixes:

  CC      drivers/xen/gntdev.o
drivers/xen/gntdev.c: In function 'map_grant_pages':
drivers/xen/gntdev.c:268: warning: cast from pointer to integer of different size

Reduce the scope of the variable at the same time.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index d43ff3072c99..d96d311b858e 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -257,14 +257,13 @@ static int find_grant_ptes(pte_t *pte, pgtable_t token,
 static int map_grant_pages(struct grant_map *map)
 {
         int i, err = 0;
-        phys_addr_t addr;
 
         if (!use_ptemod) {
                 /* Note: it could already be mapped */
                 if (map->map_ops[0].handle != -1)
                         return 0;
                 for (i = 0; i < map->count; i++) {
-                        addr = (phys_addr_t)
+                        unsigned long addr = (unsigned long)
                                 pfn_to_kaddr(page_to_pfn(map->pages[i]));
                         gnttab_set_map_op(&map->map_ops[i], addr, map->flags,
                                 map->grants[i].ref,