drm/radeon: rename fence_wait_last to fence_wait_empty

As discussed with Michel that name better
describes the behavior of this function.
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon.h

@@ -285,7 +285,7 @@ void radeon_fence_process(struct radeon_device *rdev, int ring);
 bool radeon_fence_signaled(struct radeon_fence *fence);
 int radeon_fence_wait(struct radeon_fence *fence, bool interruptible);
 int radeon_fence_wait_next(struct radeon_device *rdev, int ring);
-int radeon_fence_wait_last(struct radeon_device *rdev, int ring);
+int radeon_fence_wait_empty(struct radeon_device *rdev, int ring);
 struct radeon_fence *radeon_fence_ref(struct radeon_fence *fence);
 void radeon_fence_unref(struct radeon_fence **fence);
 int radeon_fence_count_emitted(struct radeon_device *rdev, int ring);

drivers/gpu/drm/radeon/radeon_device.c

@@ -915,7 +915,7 @@ int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
 	radeon_bo_evict_vram(rdev);
 	/* wait for gpu to finish processing current batch */
 	for (i = 0; i < RADEON_NUM_RINGS; i++)
-		radeon_fence_wait_last(rdev, i);
+		radeon_fence_wait_empty(rdev, i);
 
 	radeon_save_bios_scratch_regs(rdev);
 

drivers/gpu/drm/radeon/radeon_fence.c

@@ -297,7 +297,7 @@ int radeon_fence_wait_next(struct radeon_device *rdev, int ring)
 	return r;
 }
 
-int radeon_fence_wait_last(struct radeon_device *rdev, int ring)
+int radeon_fence_wait_empty(struct radeon_device *rdev, int ring)
 {
 	unsigned long irq_flags;
 	struct radeon_fence *fence;
@@ -442,7 +442,7 @@ void radeon_fence_driver_fini(struct radeon_device *rdev)
 	for (ring = 0; ring < RADEON_NUM_RINGS; ring++) {
 		if (!rdev->fence_drv[ring].initialized)
 			continue;
-		radeon_fence_wait_last(rdev, ring);
+		radeon_fence_wait_empty(rdev, ring);
 		wake_up_all(&rdev->fence_drv[ring].queue);
 		write_lock_irqsave(&rdev->fence_lock, irq_flags);
 		radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg);