[MTD] Cleanup of 'ioremap balanced with iounmap for drivers/mtd subsystem'

Updated version of patch, in response to comments from Francois Romieu
<romieu@fr.zoreil.com>

Remove gratuitous casts from iounmap and initialisation of variables.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

drivers/mtd/maps/arctic-mtd.c

@@ -96,7 +96,7 @@ static struct mtd_partition arctic_partitions[PARTITIONS] = {
 static int __init
 init_arctic_mtd(void)
 {
-	int err = 0;
+	int err;
 
 	printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
 
@@ -112,7 +112,7 @@ init_arctic_mtd(void)
 	arctic_mtd = do_map_probe("cfi_probe", &arctic_mtd_map);
 
 	if (!arctic_mtd) {
-		iounmap((void *) arctic_mtd_map.virt);
+		iounmap(arctic_mtd_map.virt);
 		return -ENXIO;
 	}
 
@@ -121,7 +121,7 @@ init_arctic_mtd(void)
 	err = add_mtd_partitions(arctic_mtd, arctic_partitions, PARTITIONS);
 	if (err) {
 		printk("%s: add_mtd_partitions failed\n", NAME);
-		iounmap((void *) arctic_mtd_map.virt);
+		iounmap(arctic_mtd_map.virt);
 	}
 
 	return err;

drivers/mtd/maps/beech-mtd.c

@@ -72,7 +72,7 @@ static struct mtd_partition beech_partitions[2] = {
 static int __init
 init_beech_mtd(void)
 {
-	int err = 0;
+	int err;
 
 	printk("%s: 0x%08x at 0x%08x\n", NAME, SIZE, PADDR);
 
@@ -89,7 +89,7 @@ init_beech_mtd(void)
 	beech_mtd = do_map_probe("cfi_probe", &beech_mtd_map);
 
 	if (!beech_mtd) {
-		iounmap((void *) beech_mtd_map.virt);
+		iounmap(beech_mtd_map.virt);
 		return -ENXIO;
 	}
 
@@ -98,7 +98,7 @@ init_beech_mtd(void)
 	err = add_mtd_partitions(beech_mtd, beech_partitions, 2);
 	if (err) {
 		printk("%s: add_mtd_partitions failed\n", NAME);
-		iounmap((void *) beech_mtd_map.virt);
+		iounmap(beech_mtd_map.virt);
 	}
 
 	return err;

drivers/mtd/maps/cstm_mips_ixx.c

@@ -175,8 +175,8 @@ int __init init_cstm_mips_ixx(void)
 			printk(KERN_WARNING "Failed to ioremap\n");
 			for (j = 0; j < i; j++) {
 				if (cstm_mips_ixx_map[j].virt) {
-					iounmap((void *)cstm_mips_ixx_map[j].virt);
-					cstm_mips_ixx_map[j].virt = 0;
+					iounmap(cstm_mips_ixx_map[j].virt);
+					cstm_mips_ixx_map[j].virt = NULL;
 				}
 			}
 			return -EIO;
@@ -214,8 +214,8 @@ int __init init_cstm_mips_ixx(void)
 		else {
 			for (i = 0; i < PHYSMAP_NUMBER; i++) {
 				if (cstm_mips_ixx_map[i].virt) {
-					iounmap((void *)cstm_mips_ixx_map[i].virt);
-					cstm_mips_ixx_map[i].virt = 0;
+					iounmap(cstm_mips_ixx_map[i].virt);
+					cstm_mips_ixx_map[i].virt = NULL;
 				}
 			}
 			return -ENXIO;

drivers/mtd/maps/nettel.c

@@ -463,7 +463,7 @@ int __init nettel_init(void)
 
 #ifdef CONFIG_MTD_CFI_INTELEXT
 out_unmap1:
-	iounmap((void *) nettel_intel_map.virt);
+	iounmap(nettel_intel_map.virt);
 #endif
 
 out_unmap2:

drivers/mtd/maps/redwood.c

@@ -126,7 +126,7 @@ static struct mtd_info *redwood_mtd;
 
 int __init init_redwood_flash(void)
 {
-	int err = 0;
+	int err;
 
 	printk(KERN_NOTICE "redwood: flash mapping: %x at %x\n",
 			WINDOW_SIZE, WINDOW_ADDR);

drivers/mtd/nand/edb7312.c

@@ -199,7 +199,7 @@ static void __exit ep7312_cleanup(void)
 	nand_release(ap7312_mtd);
 
 	/* Release io resource */
-	iounmap((void *)this->IO_ADDR_R);
+	iounmap(this->IO_ADDR_R);
 
 	/* Free the MTD device structure */
 	kfree(ep7312_mtd);