[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>

2 files changed, 24 insertions, 2 deletions

diff --git a/drivers/media/video/bttv-gpio.c b/drivers/media/video/bttv-gpio.c
index d64accc17b0e..c4d5e2b70c28 100644
--- a/drivers/media/video/bttv-gpio.c
+++ b/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,
+        .name   = "bttv-sub",
+        .match  = &bttv_sub_bus_match,
+        .probe  = bttv_sub_probe,
+        .remove = bttv_sub_remove,
 };
 EXPORT_SYMBOL(bttv_sub_bus_type);
 
diff --git a/drivers/media/video/bttv.h b/drivers/media/video/bttv.h
index e370d74f2a1b..9908c8e0c951 100644
--- a/drivers/media/video/bttv.h
+++ b/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)