drm: remove unused "struct drm_freelist"

This object is not used except for static fields in drm_bufs *cough*.
Inline the watermark fields and drop the unused structure definition.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_bufs.c

@@ -1217,27 +1217,26 @@ int drm_infobufs(struct drm_device *dev, void *data,
 				struct drm_buf_desc __user *to =
 				    &request->list[count];
 				struct drm_buf_entry *from = &dma->bufs[i];
-				struct drm_freelist *list = &dma->bufs[i].freelist;
 				if (copy_to_user(&to->count,
 						 &from->buf_count,
 						 sizeof(from->buf_count)) ||
 				    copy_to_user(&to->size,
 						 &from->buf_size,
 						 sizeof(from->buf_size)) ||
 				    copy_to_user(&to->low_mark,
-						 &list->low_mark,
-						 sizeof(list->low_mark)) ||
+						 &from->low_mark,
+						 sizeof(from->low_mark)) ||
 				    copy_to_user(&to->high_mark,
-						 &list->high_mark,
-						 sizeof(list->high_mark)))
+						 &from->high_mark,
+						 sizeof(from->high_mark)))
 					return -EFAULT;
 
 				DRM_DEBUG("%d %d %d %d %d\n",
 					  i,
 					  dma->bufs[i].buf_count,
 					  dma->bufs[i].buf_size,
-					  dma->bufs[i].freelist.low_mark,
-					  dma->bufs[i].freelist.high_mark);
+					  dma->bufs[i].low_mark,
+					  dma->bufs[i].high_mark);
 				++count;
 			}
 		}
@@ -1290,8 +1289,8 @@ int drm_markbufs(struct drm_device *dev, void *data,
 	if (request->high_mark < 0 || request->high_mark > entry->buf_count)
 		return -EINVAL;
 
-	entry->freelist.low_mark = request->low_mark;
-	entry->freelist.high_mark = request->high_mark;
+	entry->low_mark = request->low_mark;
+	entry->high_mark = request->high_mark;
 
 	return 0;
 }

drivers/gpu/drm/drm_info.c

@@ -132,7 +132,7 @@ int drm_bufs_info(struct seq_file *m, void *data)
 				   i,
 				   dma->bufs[i].buf_size,
 				   dma->bufs[i].buf_count,
-				   atomic_read(&dma->bufs[i].freelist.count),
+				   0,
 				   dma->bufs[i].seg_count,
 				   seg_pages,
 				   seg_pages * PAGE_SIZE / 1024);

include/drm/drmP.h

@@ -346,18 +346,6 @@ struct drm_waitlist {
 	spinlock_t write_lock;
 };
 
-struct drm_freelist {
-	int initialized;	       /**< Freelist in use */
-	atomic_t count;		       /**< Number of free buffers */
-	struct drm_buf *next;	       /**< End pointer */
-
-	wait_queue_head_t waiting;     /**< Processes waiting on free bufs */
-	int low_mark;		       /**< Low water mark */
-	int high_mark;		       /**< High water mark */
-	atomic_t wfh;		       /**< If waiting for high mark */
-	spinlock_t lock;
-};
-
 typedef struct drm_dma_handle {
 	dma_addr_t busaddr;
 	void *vaddr;
@@ -375,7 +363,8 @@ struct drm_buf_entry {
 	int page_order;
 	struct drm_dma_handle **seglist;
 
-	struct drm_freelist freelist;
+	int low_mark;			/**< Low water mark */
+	int high_mark;			/**< High water mark */
 };
 
 /* Event queued up for userspace to read */