VM: add "vm_mmap()" helper function
[~shefty/rdma-dev.git] / drivers / gpu / drm / i810 / i810_dma.c
index b85337f..a4ba453 100644 (file)
@@ -129,6 +129,7 @@ static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv)
        if (buf_priv->currently_mapped == I810_BUF_MAPPED)
                return -EINVAL;
 
+       /* This is all entirely broken */
        down_write(&current->mm->mmap_sem);
        old_fops = file_priv->filp->f_op;
        file_priv->filp->f_op = &i810_buffer_fops;