drm: Goody bye, drm_bus!

..we will not miss you..

Signed-off-by: David Herrmann <[e-mail]>
Reviewed-by: Thierry Reding <[e-mail]>
Reviewed-by: Daniel Vetter <[e-mail]>
Signed-off-by: Dave Airlie <[e-mail]>

drivers/gpu/drm/drm_ioctl.c

···
 			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

···
 	}
 }
 
-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
···
 	int i;
 
 	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

···
 }
 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
···
 {
 	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

···
 }
 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
···
 {
 	int res;
 	DRM_DEBUG("\n");
-
-	driver->bus = &drm_usb_bus;
 
 	res = usb_register(udriver);
 	return res;

include/drm/drmP.h

···
 #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
···
 	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;