commit 1545085a28f226b59c243f88b82ea25393b0d63f
author Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> Thu Feb 08 16:14:05 2007 +1100
committer Dave Airlie <airlied@linux.ie> Thu Feb 08 16:14:05 2007 +1100
tree cb6c1f8827281b8ad41f2f22e8365769aafe25cb
parent 756db73df7b7d6b9f6421c1fb2e1cabeaede5846

drm: Allow for 44 bit user-tokens (or drm_file offsets)

drivers/char/drm/drm_vm.c

diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c
index 4e48058..54a6328 100644
--- a/drivers/char/drm/drm_vm.c
+++ b/drivers/char/drm/drm_vm.c
@@ -70,7 +70,7 @@
 	if (!dev->agp || !dev->agp->cant_use_aperture)
 		goto vm_nopage_error;
 
-	if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff << PAGE_SHIFT, &hash))
+	if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash))
 		goto vm_nopage_error;
 
 	r_list = drm_hash_entry(hash, drm_map_list_t, hash);
@@ -463,8 +463,8 @@
 	lock_kernel();
 	dev = priv->head->dev;
 	dma = dev->dma;
-	DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
-		  vma->vm_start, vma->vm_end, vma->vm_pgoff << PAGE_SHIFT);
+	DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
+		  vma->vm_start, vma->vm_end, vma->vm_pgoff);
 
 	/* Length must match exact page count */
 	if (!dma || (length >> PAGE_SHIFT) != dma->page_count) {
@@ -537,8 +537,8 @@
 	unsigned long offset = 0;
 	drm_hash_item_t *hash;
 
-	DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
-		  vma->vm_start, vma->vm_end, vma->vm_pgoff << PAGE_SHIFT);
+	DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
+		  vma->vm_start, vma->vm_end, vma->vm_pgoff);
 
 	if (!priv->authenticated)
 		return -EACCES;
@@ -547,7 +547,7 @@
 	 * the AGP mapped at physical address 0
 	 * --BenH.
 	 */
-	if (!(vma->vm_pgoff << PAGE_SHIFT)
+	if (!vma->vm_pgoff
 #if __OS_HAS_AGP
 	    && (!dev->agp
 		|| dev->agp->agp_info.device->vendor != PCI_VENDOR_ID_APPLE)
@@ -555,7 +555,7 @@
 	    )
 		return drm_mmap_dma(filp, vma);
 
-	if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff << PAGE_SHIFT, &hash)) {
+	if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash)) {
 		DRM_ERROR("Could not find map\n");
 		return -EINVAL;
 	}