Revert "Driver core: convert SPI code to use struct device"

This reverts commit 2943ecf.

This should go through the SPI maintainer, it was my fault that it did
not.  Especially as it conflicts with other patches he has pending.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/spi/pxa2xx_spi.c

@@ -1234,7 +1234,7 @@ static int init_queue(struct driver_data *drv_data)
 
 	INIT_WORK(&drv_data->pump_messages, pump_messages);
 	drv_data->workqueue = create_singlethread_workqueue(
-					drv_data->master->dev.parent->bus_id);
+					drv_data->master->cdev.dev->bus_id);
 	if (drv_data->workqueue == NULL)
 		return -EBUSY;
 

drivers/spi/spi.c

@@ -193,7 +193,7 @@ struct spi_device *__init_or_module
 spi_new_device(struct spi_master *master, struct spi_board_info *chip)
 {
 	struct spi_device	*proxy;
-	struct device		*dev = &master->dev;
+	struct device		*dev = master->cdev.dev;
 	int			status;
 
 	/* NOTE:  caller did any chip->bus_num checks necessary */
@@ -215,7 +215,7 @@ spi_new_device(struct spi_master *master, struct spi_board_info *chip)
 	proxy->modalias = chip->modalias;
 
 	snprintf(proxy->dev.bus_id, sizeof proxy->dev.bus_id,
-			"%s.%u", master->dev.bus_id,
+			"%s.%u", master->cdev.class_id,
 			chip->chip_select);
 	proxy->dev.parent = dev;
 	proxy->dev.bus = &spi_bus_type;
@@ -290,7 +290,7 @@ static void __init_or_module
 scan_boardinfo(struct spi_master *master)
 {
 	struct boardinfo	*bi;
-	struct device		*dev = master->dev.parent;
+	struct device		*dev = master->cdev.dev;
 
 	down(&board_lock);
 	list_for_each_entry(bi, &board_list, list) {
@@ -319,18 +319,18 @@ scan_boardinfo(struct spi_master *master)
 
 /*-------------------------------------------------------------------------*/
 
-static void spi_master_release(struct device *dev)
+static void spi_master_release(struct class_device *cdev)
 {
 	struct spi_master *master;
 
-	master = container_of(dev, struct spi_master, dev);
+	master = container_of(cdev, struct spi_master, cdev);
 	kfree(master);
 }
 
 static struct class spi_master_class = {
 	.name		= "spi_master",
 	.owner		= THIS_MODULE,
-	.dev_release	= spi_master_release,
+	.release	= spi_master_release,
 };
 
 
@@ -364,9 +364,9 @@ spi_alloc_master(struct device *dev, unsigned size)
 	if (!master)
 		return NULL;
 
-	device_initialize(&master->dev);
-	master->dev.class = &spi_master_class;
-	master->dev.parent = get_device(dev);
+	class_device_initialize(&master->cdev);
+	master->cdev.class = &spi_master_class;
+	master->cdev.dev = get_device(dev);
 	spi_master_set_devdata(master, &master[1]);
 
 	return master;
@@ -396,7 +396,7 @@ int __init_or_module
 spi_register_master(struct spi_master *master)
 {
 	static atomic_t		dyn_bus_id = ATOMIC_INIT((1<<16) - 1);
-	struct device		*dev = master->dev.parent;
+	struct device		*dev = master->cdev.dev;
 	int			status = -ENODEV;
 	int			dynamic = 0;
 
@@ -412,12 +412,12 @@ spi_register_master(struct spi_master *master)
 	/* register the device, then userspace will see it.
 	 * registration fails if the bus ID is in use.
 	 */
-	snprintf(master->dev.bus_id, sizeof master->dev.bus_id,
+	snprintf(master->cdev.class_id, sizeof master->cdev.class_id,
 		"spi%u", master->bus_num);
-	status = device_add(&master->dev);
+	status = class_device_add(&master->cdev);
 	if (status < 0)
 		goto done;
-	dev_dbg(dev, "registered master %s%s\n", master->dev.bus_id,
+	dev_dbg(dev, "registered master %s%s\n", master->cdev.class_id,
 			dynamic ? " (dynamic)" : "");
 
 	/* populate children from any spi device tables */
@@ -449,8 +449,8 @@ void spi_unregister_master(struct spi_master *master)
 {
 	int dummy;
 
-	dummy = device_for_each_child(&master->dev, NULL, __unregister);
-	device_unregister(&master->dev);
+	dummy = device_for_each_child(master->cdev.dev, NULL, __unregister);
+	class_device_unregister(&master->cdev);
 }
 EXPORT_SYMBOL_GPL(spi_unregister_master);
 
@@ -471,7 +471,7 @@ struct spi_master *spi_busnum_to_master(u16 bus_num)
 
 	down(&spi_master_class.sem);
 	list_for_each_entry(cdev, &spi_master_class.children, node) {
-		m = container_of(cdev, struct spi_master, dev.kobj);
+		m = container_of(cdev, struct spi_master, cdev);
 		if (m->bus_num == bus_num) {
 			master = spi_master_get(m);
 			break;

drivers/spi/spi_bitbang.c

@@ -479,7 +479,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang)
 	/* this task is the only thing to touch the SPI bits */
 	bitbang->busy = 0;
 	bitbang->workqueue = create_singlethread_workqueue(
-			bitbang->master->dev.parent->bus_id);
+			bitbang->master->cdev.dev->bus_id);
 	if (bitbang->workqueue == NULL) {
 		status = -EBUSY;
 		goto err1;
@@ -513,14 +513,14 @@ int spi_bitbang_stop(struct spi_bitbang *bitbang)
 	while (!list_empty(&bitbang->queue) && limit--) {
 		spin_unlock_irq(&bitbang->lock);
 
-		dev_dbg(&bitbang->master->dev, "wait for queue\n");
+		dev_dbg(bitbang->master->cdev.dev, "wait for queue\n");
 		msleep(10);
 
 		spin_lock_irq(&bitbang->lock);
 	}
 	spin_unlock_irq(&bitbang->lock);
 	if (!list_empty(&bitbang->queue)) {
-		dev_err(&bitbang->master->dev, "queue didn't empty\n");
+		dev_err(bitbang->master->cdev.dev, "queue didn't empty\n");
 		return -EBUSY;
 	}
 

drivers/spi/spi_butterfly.c

@@ -246,7 +246,7 @@ static void butterfly_attach(struct parport *p)
 	 * and no way to be selective about what it binds to.
 	 */
 
-	/* FIXME where should master->dev.parent come from?
+	/* FIXME where should master->cdev.dev come from?
 	 * e.g. /sys/bus/pnp0/00:0b, some PCI thing, etc
 	 * setting up a platform device like this is an ugly kluge...
 	 */
@@ -386,7 +386,7 @@ static void butterfly_detach(struct parport *p)
 	butterfly = NULL;
 
 	/* stop() unregisters child devices too */
-	pdev = to_platform_device(pp->bitbang.master->dev.parent);
+	pdev = to_platform_device(pp->bitbang.master->cdev.dev);
 	status = spi_bitbang_stop(&pp->bitbang);
 
 	/* turn off VCC */

include/linux/spi/spi.h

@@ -170,7 +170,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
  * message's completion function when the transaction completes.
  */
 struct spi_master {
-	struct device		dev;
+	struct class_device	cdev;
 
 	/* other than negative (== assign one dynamically), bus_num is fully
 	 * board-specific.  usually that simplifies to being SOC-specific.
@@ -216,25 +216,25 @@ struct spi_master {
 
 static inline void *spi_master_get_devdata(struct spi_master *master)
 {
-	return dev_get_drvdata(&master->dev);
+	return class_get_devdata(&master->cdev);
 }
 
 static inline void spi_master_set_devdata(struct spi_master *master, void *data)
 {
-	dev_set_drvdata(&master->dev, data);
+	class_set_devdata(&master->cdev, data);
 }
 
 static inline struct spi_master *spi_master_get(struct spi_master *master)
 {
-	if (!master || !get_device(&master->dev))
+	if (!master || !class_device_get(&master->cdev))
 		return NULL;
 	return master;
 }
 
 static inline void spi_master_put(struct spi_master *master)
 {
 	if (master)
-		put_device(&master->dev);
+		class_device_put(&master->cdev);
 }