mtd: impa7: add missing __iomem annotation

Added missing __iomem annotation and used NULL instead of 0
in order to fix the following sparse warnings:

drivers/mtd/maps/impa7.c:82:32: warning: Using plain integer as NULL pointer
drivers/mtd/maps/impa7.c:96:34: warning: cast removes address space of expression
drivers/mtd/maps/impa7.c:96:34: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/maps/impa7.c:96:34:    expected void volatile [noderef] <asn:2>*addr
drivers/mtd/maps/impa7.c:96:34:    got void *<noident>
drivers/mtd/maps/impa7.c:108:34: warning: cast removes address space of expression
drivers/mtd/maps/impa7.c:108:34: warning: incorrect type in argument 1 (different address spaces)
drivers/mtd/maps/impa7.c:108:34:    expected void volatile [noderef] <asn:2>*addr
drivers/mtd/maps/impa7.c:108:34:    got void *<noident>
drivers/mtd/maps/impa7.c:109:45: warning: Using plain integer as NULL pointer

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c
index 49686744d93c..15bbda03be65 100644
--- a/drivers/mtd/maps/impa7.c
+++ b/drivers/mtd/maps/impa7.c
@@ -79,7 +79,7 @@ static int __init init_impa7(void)
                 }
                 simple_map_init(&impa7_map[i]);
 
-                impa7_mtd[i] = 0;
+                impa7_mtd[i] = NULL;
                 type = rom_probe_types;
                 for(; !impa7_mtd[i] && *type; type++) {
                         impa7_mtd[i] = do_map_probe(*type, &impa7_map[i]);
@@ -91,9 +91,9 @@ static int __init init_impa7(void)
                         mtd_device_parse_register(impa7_mtd[i], NULL, NULL,
                                                   partitions,
                                                   ARRAY_SIZE(partitions));
+                } else {
+                        iounmap((void __iomem *)impa7_map[i].virt);
                 }
-                else
-                        iounmap((void *)impa7_map[i].virt);
         }
         return devicesfound == 0 ? -ENXIO : 0;
 }
@@ -105,8 +105,8 @@ static void __exit cleanup_impa7(void)
                 if (impa7_mtd[i]) {
                         mtd_device_unregister(impa7_mtd[i]);
                         map_destroy(impa7_mtd[i]);
-                        iounmap((void *)impa7_map[i].virt);
-                        impa7_map[i].virt = 0;
+                        iounmap((void __iomem *)impa7_map[i].virt);
+                        impa7_map[i].virt = NULL;
                 }
         }
 }