[PATCH v3 4/6] drm/radeon: add helper rdev_to_drm(rdev)

[Wu Hoi Pok <wuhoipok@gmail.com>]

Add helper rdev_to_drm(rdev), similar to amdgpu, most function should
access the "drm_device" with "rdev_to_drm(rdev)" instead, where amdgpu has
"adev_to_drm(adev)". It also makes changing from "*drm_device" to "drm_device"
in "radeon_devicce" later on easier.

Signed-off-by: Wu Hoi Pok <wuhoipok@gmail.com>
---
 drivers/gpu/drm/radeon/radeon.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 0999c8eaae94..ae35c102a487 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2476,6 +2476,11 @@ void r100_io_wreg(struct radeon_device *rdev, u32 reg, u32 v);
 u32 cik_mm_rdoorbell(struct radeon_device *rdev, u32 index);
 void cik_mm_wdoorbell(struct radeon_device *rdev, u32 index, u32 v);
 
+static inline struct drm_device *rdev_to_drm(struct radeon_device *rdev)
+{
+	return rdev->ddev;
+}
+
 /*
  * Cast helper
  */
-- 
2.45.2