firewire: refactor fw_unit reference counting

Add wrappers for getting and putting a unit.
Remove some line breaks.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>

drivers/firewire/fw-device.h

@@ -64,28 +64,24 @@ struct fw_device {
 	struct fw_attribute_group attribute_group;
 };
 
-static inline struct fw_device *
-fw_device(struct device *dev)
+static inline struct fw_device *fw_device(struct device *dev)
 {
 	return container_of(dev, struct fw_device, device);
 }
 
-static inline int
-fw_device_is_shutdown(struct fw_device *device)
+static inline int fw_device_is_shutdown(struct fw_device *device)
 {
 	return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
 }
 
-static inline struct fw_device *
-fw_device_get(struct fw_device *device)
+static inline struct fw_device *fw_device_get(struct fw_device *device)
 {
 	get_device(&device->device);
 
 	return device;
 }
 
-static inline void
-fw_device_put(struct fw_device *device)
+static inline void fw_device_put(struct fw_device *device)
 {
 	put_device(&device->device);
 }
@@ -104,12 +100,23 @@ struct fw_unit {
 	struct fw_attribute_group attribute_group;
 };
 
-static inline struct fw_unit *
-fw_unit(struct device *dev)
+static inline struct fw_unit *fw_unit(struct device *dev)
 {
 	return container_of(dev, struct fw_unit, device);
 }
 
+static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
+{
+	get_device(&unit->device);
+
+	return unit;
+}
+
+static inline void fw_unit_put(struct fw_unit *unit)
+{
+	put_device(&unit->device);
+}
+
 #define CSR_OFFSET	0x40
 #define CSR_LEAF	0x80
 #define CSR_DIRECTORY	0xc0

drivers/firewire/fw-sbp2.c

@@ -796,7 +796,7 @@ static void sbp2_release_target(struct kref *kref)
 	scsi_remove_host(shost);
 	fw_notify("released %s\n", tgt->bus_id);
 
-	put_device(&tgt->unit->device);
+	fw_unit_put(tgt->unit);
 	scsi_host_put(shost);
 	fw_device_put(device);
 }
@@ -1119,7 +1119,7 @@ static int sbp2_probe(struct device *dev)
 		goto fail_shost_put;
 
 	fw_device_get(device);
-	get_device(&unit->device);
+	fw_unit_get(unit);
 
 	/* Initialize to values that won't match anything in our table. */
 	firmware_revision = 0xff000000;