staging: zram: make global var "num_devices" use unique name

The global variable "num_devices" is too general to be
global. This patch switches the name to be "zram_num_devices".
Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/zram/zram_drv.c

@@ -40,7 +40,7 @@ static int zram_major;
 struct zram *zram_devices;
 
 /* Module params (documentation at end) */
-unsigned int num_devices;
+unsigned int zram_num_devices;
 
 static void zram_stat_inc(u32 *v)
 {
@@ -780,9 +780,9 @@ static int __init zram_init(void)
 {
 	int ret, dev_id;
 
-	if (num_devices > max_num_devices) {
+	if (zram_num_devices > max_num_devices) {
 		pr_warning("Invalid value for num_devices: %u\n",
-				num_devices);
+				zram_num_devices);
 		ret = -EINVAL;
 		goto out;
 	}
@@ -794,20 +794,20 @@ static int __init zram_init(void)
 		goto out;
 	}
 
-	if (!num_devices) {
+	if (!zram_num_devices) {
 		pr_info("num_devices not specified. Using default: 1\n");
-		num_devices = 1;
+		zram_num_devices = 1;
 	}
 
 	/* Allocate the device array and initialize each one */
-	pr_info("Creating %u devices ...\n", num_devices);
-	zram_devices = kzalloc(num_devices * sizeof(struct zram), GFP_KERNEL);
+	pr_info("Creating %u devices ...\n", zram_num_devices);
+	zram_devices = kzalloc(zram_num_devices * sizeof(struct zram), GFP_KERNEL);
 	if (!zram_devices) {
 		ret = -ENOMEM;
 		goto unregister;
 	}
 
-	for (dev_id = 0; dev_id < num_devices; dev_id++) {
+	for (dev_id = 0; dev_id < zram_num_devices; dev_id++) {
 		ret = create_device(&zram_devices[dev_id], dev_id);
 		if (ret)
 			goto free_devices;
@@ -830,7 +830,7 @@ static void __exit zram_exit(void)
 	int i;
 	struct zram *zram;
 
-	for (i = 0; i < num_devices; i++) {
+	for (i = 0; i < zram_num_devices; i++) {
 		zram = &zram_devices[i];
 
 		destroy_device(zram);
@@ -844,8 +844,8 @@ static void __exit zram_exit(void)
 	pr_debug("Cleanup done!\n");
 }
 
-module_param(num_devices, uint, 0);
-MODULE_PARM_DESC(num_devices, "Number of zram devices");
+module_param(zram_num_devices, uint, 0);
+MODULE_PARM_DESC(zram_num_devices, "Number of zram devices");
 
 module_init(zram_init);
 module_exit(zram_exit);

drivers/staging/zram/zram_drv.h

@@ -124,7 +124,7 @@ struct zram {
 };
 
 extern struct zram *zram_devices;
-extern unsigned int num_devices;
+extern unsigned int zram_num_devices;
 #ifdef CONFIG_SYSFS
 extern struct attribute_group zram_disk_attr_group;
 #endif

drivers/staging/zram/zram_sysfs.c

@@ -34,7 +34,7 @@ static struct zram *dev_to_zram(struct device *dev)
 	int i;
 	struct zram *zram = NULL;
 
-	for (i = 0; i < num_devices; i++) {
+	for (i = 0; i < zram_num_devices; i++) {
 		zram = &zram_devices[i];
 		if (disk_to_dev(zram->disk) == dev)
 			break;