[PATCH 02/10] drm: Use dev->name as fallback for dev->unique

[Daniel Vetter]

Lots of arm drivers get this wrong and for most arm boards this is the
right thing actually. And anyway with most loaders you want to chase
sysfs links anyway to figure out which dri device you want.

This will fix dmesg noise for rockchip and sti.

Cc: Ilia Mirkin <imirkin at alum.mit.edu>
Reported-by: Ilia Mirkin <imirkin at alum.mit.edu>
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/drm_ioctl.c     | 12 +++++-------
 drivers/gpu/drm/vgem/vgem_drv.c |  2 --
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 8ce2a0c59116..3ecd1368c23a 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -134,16 +134,14 @@ static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
 			drm_unset_busid(dev, master);
 			return ret;
 		}
-	} else {
-		if (WARN(dev->unique == NULL,
-			 "No drm_driver.set_busid() implementation provided by "
-			 "%ps. Use drm_dev_set_unique() to set the unique "
-			 "name explicitly.", dev->driver))
-			return -EINVAL;
-
+	} else if (dev->unique) {
 		master->unique = kstrdup(dev->unique, GFP_KERNEL);
 		if (master->unique)
 			master->unique_len = strlen(dev->unique);
+	} else {
+		master->unique = kstrdup(dev->driver->name, GFP_KERNEL);
+		if (master->unique)
+			master->unique_len = strlen(dev->driver->name);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index ae4de36d1d83..d61a547fa3c9 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -260,8 +260,6 @@ static int __init vgem_init(void)
 		goto out;
 	}
 
-	drm_dev_set_unique(vgem_device, "vgem");
-
 	ret  = drm_dev_register(vgem_device, 0);
 
 	if (ret)
-- 
2.8.0.rc3