1 files changed, 0 insertions, 36 deletions

diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 92c2914239e3..e6b1ca141b93 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -30,32 +30,6 @@ static struct ion_device *internal_dev;
 static int heap_id;
 
 /* this function should only be called while dev->lock is held */
-static void ion_buffer_add(struct ion_device *dev,
-			   struct ion_buffer *buffer)
-{
-	struct rb_node **p = &dev->buffers.rb_node;
-	struct rb_node *parent = NULL;
-	struct ion_buffer *entry;
-
-	while (*p) {
-		parent = *p;
-		entry = rb_entry(parent, struct ion_buffer, node);
-
-		if (buffer < entry) {
-			p = &(*p)->rb_left;
-		} else if (buffer > entry) {
-			p = &(*p)->rb_right;
-		} else {
-			pr_err("%s: buffer already found.", __func__);
-			BUG();
-		}
-	}
-
-	rb_link_node(&buffer->node, parent, p);
-	rb_insert_color(&buffer->node, &dev->buffers);
-}
-
-/* this function should only be called while dev->lock is held */
 static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
 					    struct ion_device *dev,
 					    unsigned long len,
@@ -100,9 +74,6 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
 
 	INIT_LIST_HEAD(&buffer->attachments);
 	mutex_init(&buffer->lock);
-	mutex_lock(&dev->buffer_lock);
-	ion_buffer_add(dev, buffer);
-	mutex_unlock(&dev->buffer_lock);
 	return buffer;
 
 err1:
@@ -131,11 +102,6 @@ void ion_buffer_destroy(struct ion_buffer *buffer)
 static void _ion_buffer_destroy(struct ion_buffer *buffer)
 {
 	struct ion_heap *heap = buffer->heap;
-	struct ion_device *dev = buffer->dev;
-
-	mutex_lock(&dev->buffer_lock);
-	rb_erase(&buffer->node, &dev->buffers);
-	mutex_unlock(&dev->buffer_lock);
 
 	if (heap->flags & ION_HEAP_FLAG_DEFER_FREE)
 		ion_heap_freelist_add(heap, buffer);
@@ -694,8 +660,6 @@ static int ion_device_create(void)
 	}
 
 	idev->debug_root = debugfs_create_dir("ion", NULL);
-	idev->buffers = RB_ROOT;
-	mutex_init(&idev->buffer_lock);
 	init_rwsem(&idev->lock);
 	plist_head_init(&idev->heaps);
 	internal_dev = idev;