1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index 30372f7b2d4..348b367debe 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -1510,8 +1510,8 @@ int drm_freebufs(struct drm_device *dev, void *data,
  * \param arg pointer to a drm_buf_map structure.
  * \return zero on success or a negative number on failure.
  *
- * Maps the AGP, SG or PCI buffer region with do_mmap(), and copies information
- * about each buffer into user space. For PCI buffers, it calls do_mmap() with
+ * Maps the AGP, SG or PCI buffer region with vm_mmap(), and copies information
+ * about each buffer into user space. For PCI buffers, it calls vm_mmap() with
  * offset equal to 0, which drm_mmap() interpretes as PCI buffers and calls
  * drm_mmap_dma().
  */
@@ -1553,18 +1553,14 @@ int drm_mapbufs(struct drm_device *dev, void *data,
                                 retcode = -EINVAL;
                                 goto done;
                         }
-                        down_write(&current->mm->mmap_sem);
-                        virtual = do_mmap(file_priv->filp, 0, map->size,
+                        virtual = vm_mmap(file_priv->filp, 0, map->size,
                                           PROT_READ | PROT_WRITE,
                                           MAP_SHARED,
                                           token);
-                        up_write(&current->mm->mmap_sem);
                 } else {
-                        down_write(&current->mm->mmap_sem);
-                        virtual = do_mmap(file_priv->filp, 0, dma->byte_count,
+                        virtual = vm_mmap(file_priv->filp, 0, dma->byte_count,
                                           PROT_READ | PROT_WRITE,
                                           MAP_SHARED, 0);
-                        up_write(&current->mm->mmap_sem);
                 }
                 if (virtual > -1024UL) {
                         /* Real error */