drm: Goody bye, drm_bus!

..we will not miss you..
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Reviewed-by: NThierry Reding <treding@nvidia.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_ioctl.c

@@ -250,15 +250,9 @@ static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
 			drm_unset_busid(dev, master);
 			return ret;
 		}
-	} else if (dev->driver->bus && dev->driver->bus->set_busid) {
-		ret = dev->driver->bus->set_busid(dev, master);
-		if (ret) {
-			drm_unset_busid(dev, master);
-			return ret;
-		}
 	} else {
 		if (WARN(dev->unique == NULL,
-			 "No drm_bus.set_busid() implementation provided by "
+			 "No drm_driver.set_busid() implementation provided by "
 			 "%ps. Use drm_dev_set_unique() to set the unique "
 			 "name explicitly.", dev->driver))
 			return -EINVAL;

drivers/gpu/drm/drm_pci.c

@@ -254,10 +254,6 @@ void drm_pci_agp_destroy(struct drm_device *dev)
 	}
 }
 
-static struct drm_bus drm_pci_bus = {
-	.set_busid = drm_pci_set_busid,
-};
-
 /**
  * drm_get_pci_dev - Register a PCI device with the DRM subsystem
  * @pdev: PCI device
@@ -338,8 +334,6 @@ int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver)
 
 	DRM_DEBUG("\n");
 
-	driver->bus = &drm_pci_bus;
-
 	if (driver->driver_features & DRIVER_MODESET)
 		return pci_register_driver(pdriver);
 

drivers/gpu/drm/drm_platform.c

@@ -86,10 +86,6 @@ int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master)
 }
 EXPORT_SYMBOL(drm_platform_set_busid);
 
-static struct drm_bus drm_platform_bus = {
-	.set_busid = drm_platform_set_busid,
-};
-
 /**
  * drm_platform_init - Register a platform device with the DRM subsystem
  * @driver: DRM device driver
@@ -105,7 +101,6 @@ int drm_platform_init(struct drm_driver *driver, struct platform_device *platfor
 {
 	DRM_DEBUG("\n");
 
-	driver->bus = &drm_platform_bus;
 	return drm_get_platform_dev(platform_device, driver);
 }
 EXPORT_SYMBOL(drm_platform_init);

drivers/gpu/drm/drm_usb.c

@@ -36,16 +36,6 @@ int drm_get_usb_dev(struct usb_interface *interface,
 }
 EXPORT_SYMBOL(drm_get_usb_dev);
 
-static int drm_usb_set_busid(struct drm_device *dev,
-			       struct drm_master *master)
-{
-	return 0;
-}
-
-static struct drm_bus drm_usb_bus = {
-	.set_busid = drm_usb_set_busid,
-};
-
 /**
  * drm_usb_init - Register matching USB devices with the DRM subsystem
  * @driver: DRM device driver
@@ -61,8 +51,6 @@ int drm_usb_init(struct drm_driver *driver, struct usb_driver *udriver)
 	int res;
 	DRM_DEBUG("\n");
 
-	driver->bus = &drm_usb_bus;
-
 	res = usb_register(udriver);
 	return res;
 }

include/drm/drmP.h

@@ -605,10 +605,6 @@ struct drm_master {
 #define DRM_SCANOUTPOS_INVBL        (1 << 1)
 #define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
-struct drm_bus {
-	int (*set_busid)(struct drm_device *dev, struct drm_master *master);
-};
-
 /**
  * DRM driver structure. This structure represent the common code for
  * a family of cards. There will one drm_device for each card present
@@ -846,7 +842,6 @@ struct drm_driver {
 	const struct drm_ioctl_desc *ioctls;
 	int num_ioctls;
 	const struct file_operations *fops;
-	struct drm_bus *bus;
 
 	/* List of devices hanging off this driver with stealth attach. */
 	struct list_head legacy_dev_list;