[PATCH] Add bttv sub bus_type probe and remove methods

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/media/dvb/bt8xx/dvb-bt8xx.c

@@ -779,9 +779,8 @@ static int __init dvb_bt8xx_load_card(struct dvb_bt8xx_card *card, u32 type)
 	return 0;
 }
 
-static int dvb_bt8xx_probe(struct device *dev)
+static int dvb_bt8xx_probe(struct bttv_sub_device *sub)
 {
-	struct bttv_sub_device *sub = to_bttv_sub_dev(dev);
 	struct dvb_bt8xx_card *card;
 	struct pci_dev* bttv_pci_dev;
 	int ret;
@@ -890,13 +889,13 @@ static int dvb_bt8xx_probe(struct device *dev)
 		return ret;
 	}
 
-	dev_set_drvdata(dev, card);
+	dev_set_drvdata(&sub->dev, card);
 	return 0;
 }
 
-static int dvb_bt8xx_remove(struct device *dev)
+static int dvb_bt8xx_remove(struct bttv_sub_device *sub)
 {
-	struct dvb_bt8xx_card *card = dev_get_drvdata(dev);
+	struct dvb_bt8xx_card *card = dev_get_drvdata(&sub->dev);
 
 	dprintk("dvb_bt8xx: unloading card%d\n", card->bttv_nr);
 
@@ -919,6 +918,7 @@ static int dvb_bt8xx_remove(struct device *dev)
 static struct bttv_sub_driver driver = {
 	.drv = {
 		.name		= "dvb-bt8xx",
+	},
 	.probe		= dvb_bt8xx_probe,
 	.remove		= dvb_bt8xx_remove,
 	/* FIXME:
@@ -926,7 +926,6 @@ static struct bttv_sub_driver driver = {
 	 * .suspend	= dvb_bt8xx_suspend,
 	 * .resume	= dvb_bt8xx_resume,
 	 */
-	},
 };
 
 static int __init dvb_bt8xx_init(void)

drivers/media/video/bttv-gpio.c

@@ -47,9 +47,29 @@ static int bttv_sub_bus_match(struct device *dev, struct device_driver *drv)
 	return 0;
 }
 
+static int bttv_sub_probe(struct device *dev)
+{
+	struct bttv_sub_device *sdev = to_bttv_sub_dev(dev);
+	struct bttv_sub_driver *sub = to_bttv_sub_drv(dev->driver);
+
+	return sub->probe ? sub->probe(sdev) : -ENODEV;
+}
+
+static int bttv_sub_remove(struct device *dev)
+{
+	struct bttv_sub_device *sdev = to_bttv_sub_dev(dev);
+	struct bttv_sub_driver *sub = to_bttv_sub_drv(dev->driver);
+
+	if (sub->remove)
+		sub->remove(sdev);
+	return 0;
+}
+
 struct bus_type bttv_sub_bus_type = {
 	.name   = "bttv-sub",
 	.match  = &bttv_sub_bus_match,
+	.probe  = bttv_sub_probe,
+	.remove = bttv_sub_remove,
 };
 EXPORT_SYMBOL(bttv_sub_bus_type);
 

drivers/media/video/bttv.h

@@ -365,6 +365,8 @@ struct bttv_sub_device {
 struct bttv_sub_driver {
 	struct device_driver   drv;
 	char                   wanted[BUS_ID_SIZE];
+	int                    (*probe)(struct bttv_sub_device *sub);
+	void                   (*remove)(struct bttv_sub_device *sub);
 	void                   (*gpio_irq)(struct bttv_sub_device *sub);
 };
 #define to_bttv_sub_drv(x) container_of((x), struct bttv_sub_driver, drv)