drm: remove drm_bus->get_name

The only user is the info debugfs file, so we only need something
human readable. Now for both pci and platform devices we've used the
name of the underlying device driver, which matches the name of the
drm driver in all cases. So we can just use that instead.

The exception is usb, which used a generic "USB". Not to harmful with
just one usb driver, but better to use "udl", too.

With that converted we can rip out all the ->get_name implementations.

Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/drm_info.c

@@ -47,18 +47,16 @@ int drm_name_info(struct seq_file *m, void *data)
 	struct drm_minor *minor = node->minor;
 	struct drm_device *dev = minor->dev;
 	struct drm_master *master = minor->master;
-	const char *bus_name;
 	if (!master)
 		return 0;
 
-	bus_name = dev->driver->bus->get_name(dev);
 	if (master->unique) {
 		seq_printf(m, "%s %s %s\n",
-			   bus_name,
+			   dev->driver->name,
 			   dev_name(dev->dev), master->unique);
 	} else {
 		seq_printf(m, "%s %s\n",
-			   bus_name, dev_name(dev->dev));
+			   dev->driver->name, dev_name(dev->dev));
 	}
 	return 0;
 }

drivers/gpu/drm/drm_pci.c

@@ -137,12 +137,6 @@ static int drm_get_pci_domain(struct drm_device *dev)
 	return pci_domain_nr(dev->pdev->bus);
 }
 
-static const char *drm_pci_get_name(struct drm_device *dev)
-{
-	struct pci_driver *pdriver = dev->driver->kdriver.pci;
-	return pdriver->name;
-}
-
 static int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master)
 {
 	int len, ret;
@@ -287,7 +281,6 @@ void drm_pci_agp_destroy(struct drm_device *dev)
 }
 
 static struct drm_bus drm_pci_bus = {
-	.get_name = drm_pci_get_name,
 	.set_busid = drm_pci_set_busid,
 };
 

drivers/gpu/drm/drm_platform.c

@@ -68,11 +68,6 @@ static int drm_get_platform_dev(struct platform_device *platdev,
 	return ret;
 }
 
-static const char *drm_platform_get_name(struct drm_device *dev)
-{
-	return dev->platformdev->name;
-}
-
 static int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master)
 {
 	int len, ret, id;
@@ -107,7 +102,6 @@ static int drm_platform_set_busid(struct drm_device *dev, struct drm_master *mas
 }
 
 static struct drm_bus drm_platform_bus = {
-	.get_name = drm_platform_get_name,
 	.set_busid = drm_platform_set_busid,
 };
 

drivers/gpu/drm/drm_usb.c

@@ -36,19 +36,13 @@ int drm_get_usb_dev(struct usb_interface *interface,
 }
 EXPORT_SYMBOL(drm_get_usb_dev);
 
-static const char *drm_usb_get_name(struct drm_device *dev)
-{
-	return "USB";
-}
-
 static int drm_usb_set_busid(struct drm_device *dev,
 			       struct drm_master *master)
 {
 	return 0;
 }
 
 static struct drm_bus drm_usb_bus = {
-	.get_name = drm_usb_get_name,
 	.set_busid = drm_usb_set_busid,
 };
 

include/drm/drmP.h

@@ -726,7 +726,6 @@ struct drm_master {
 #define DRM_SCANOUTPOS_ACCURATE     (1 << 2)
 
 struct drm_bus {
-	const char *(*get_name)(struct drm_device *dev);
 	int (*set_busid)(struct drm_device *dev, struct drm_master *master);
 };