1 files changed, 13 insertions, 33 deletions

diff --git a/drivers/parport/share.c b/drivers/parport/share.c
index 62f8407923d4..427abdf3c4c4 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -49,8 +49,6 @@ static DEFINE_SPINLOCK(parportlist_lock);
 static LIST_HEAD(all_ports);
 static DEFINE_SPINLOCK(full_list_lock);
 
-static LIST_HEAD(drivers);
-
 static DEFINE_MUTEX(registration_lock);
 
 /* What you can do to a port that's gone away.. */
@@ -130,7 +128,7 @@ static int parport_probe(struct device *dev)
 	return drv->probe(to_pardevice(dev));
 }
 
-static struct bus_type parport_bus_type = {
+static const struct bus_type parport_bus_type = {
 	.name = "parport",
 	.probe = parport_probe,
 };
@@ -165,10 +163,6 @@ static int driver_check(struct device_driver *dev_drv, void *_port)
 static void attach_driver_chain(struct parport *port)
 {
 	/* caller has exclusive registration_lock */
-	struct parport_driver *drv;
-
-	list_for_each_entry(drv, &drivers, list)
-		drv->attach(port);
 
 	/*
 	 * call the driver_check function of the drivers registered in
@@ -191,10 +185,7 @@ static int driver_detach(struct device_driver *_drv, void *_port)
 /* Call detach(port) for each registered driver. */
 static void detach_driver_chain(struct parport *port)
 {
-	struct parport_driver *drv;
 	/* caller has exclusive registration_lock */
-	list_for_each_entry(drv, &drivers, list)
-		drv->detach(port);
 
 	/*
 	 * call the detach function of the drivers registered in
@@ -361,7 +352,6 @@ static void free_port(struct device *dev)
 		kfree(port->probe_info[d].description);
 	}
 
-	kfree(port->name);
 	kfree(port);
 }
 
@@ -438,7 +428,6 @@ struct parport *parport_register_port(unsigned long base, int irq, int dma,
 	struct parport *tmp;
 	int num;
 	int device;
-	char *name;
 	int ret;
 
 	tmp = kzalloc(sizeof(struct parport), GFP_KERNEL);
@@ -450,13 +439,9 @@ struct parport *parport_register_port(unsigned long base, int irq, int dma,
 	tmp->irq = irq;
 	tmp->dma = dma;
 	tmp->muxport = tmp->daisy = tmp->muxsel = -1;
-	tmp->modes = 0;
 	INIT_LIST_HEAD(&tmp->list);
-	tmp->devices = tmp->cad = NULL;
-	tmp->flags = 0;
 	tmp->ops = ops;
 	tmp->physport = tmp;
-	memset(tmp->probe_info, 0, 5 * sizeof(struct parport_device_info));
 	rwlock_init(&tmp->cad_lock);
 	spin_lock_init(&tmp->waitlist_lock);
 	spin_lock_init(&tmp->pardevice_lock);
@@ -465,19 +450,15 @@ struct parport *parport_register_port(unsigned long base, int irq, int dma,
 	sema_init(&tmp->ieee1284.irq, 0);
 	tmp->spintime = parport_default_spintime;
 	atomic_set(&tmp->ref_count, 1);
-	INIT_LIST_HEAD(&tmp->full_list);
 
-	name = kmalloc(15, GFP_KERNEL);
-	if (!name) {
-		kfree(tmp);
-		return NULL;
-	}
 	/* Search for the lowest free parport number. */
 
 	spin_lock(&full_list_lock);
-	for (l = all_ports.next, num = 0; l != &all_ports; l = l->next, num++) {
+	num = 0;
+	list_for_each(l, &all_ports) {
 		struct parport *p = list_entry(l, struct parport, full_list);
-		if (p->number != num)
+
+		if (p->number != num++)
 			break;
 	}
 	tmp->portnum = tmp->number = num;
@@ -487,19 +468,17 @@ struct parport *parport_register_port(unsigned long base, int irq, int dma,
 	/*
 	 * Now that the portnum is known finish doing the Init.
 	 */
-	sprintf(name, "parport%d", tmp->portnum = tmp->number);
-	tmp->name = name;
+	dev_set_name(&tmp->bus_dev, "parport%d", tmp->portnum);
 	tmp->bus_dev.bus = &parport_bus_type;
 	tmp->bus_dev.release = free_port;
-	dev_set_name(&tmp->bus_dev, name);
 	tmp->bus_dev.type = &parport_device_type;
 
+	tmp->name = dev_name(&tmp->bus_dev);
+
 	for (device = 0; device < 5; device++)
 		/* assume the worst */
 		tmp->probe_info[device].class = PARPORT_CLASS_LEGACY;
 
-	tmp->waithead = tmp->waittail = NULL;
-
 	ret = device_register(&tmp->bus_dev);
 	if (ret) {
 		put_device(&tmp->bus_dev);
@@ -623,7 +602,7 @@ static void free_pardevice(struct device *dev)
 {
 	struct pardevice *par_dev = to_pardevice(dev);
 
-	kfree(par_dev->name);
+	kfree_const(par_dev->name);
 	kfree(par_dev);
 }
 
@@ -694,8 +673,8 @@ parport_register_dev_model(struct parport *port, const char *name,
 			   const struct pardev_cb *par_dev_cb, int id)
 {
 	struct pardevice *par_dev;
+	const char *devname;
 	int ret;
-	char *devname;
 
 	if (port->physport->flags & PARPORT_FLAG_EXCL) {
 		/* An exclusive device is registered. */
@@ -738,7 +717,7 @@ parport_register_dev_model(struct parport *port, const char *name,
 	if (!par_dev->state)
 		goto err_put_par_dev;
 
-	devname = kstrdup(name, GFP_KERNEL);
+	devname = kstrdup_const(name, GFP_KERNEL);
 	if (!devname)
 		goto err_free_par_dev;
 
@@ -816,7 +795,7 @@ parport_register_dev_model(struct parport *port, const char *name,
 	return par_dev;
 
 err_free_devname:
-	kfree(devname);
+	kfree_const(devname);
 err_free_par_dev:
 	kfree(par_dev->state);
 err_put_par_dev:
@@ -1231,4 +1210,5 @@ irqreturn_t parport_irq_handler(int irq, void *dev_id)
 }
 EXPORT_SYMBOL(parport_irq_handler);
 
+MODULE_DESCRIPTION("Parallel-port resource manager");
 MODULE_LICENSE("GPL");