drm: move drm authentication to new generic hash table.

Fix drm_remove_magic potential memory leak / corruption. Move drm
authentication token hashing to new generic hash table implementation.

Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
index 3da72f7364f0..f9ecc8414b8a 100644
--- a/drivers/char/drm/drm_drv.c
+++ b/drivers/char/drm/drm_drv.c
@@ -155,12 +155,10 @@ int drm_lastclose(drm_device_t * dev)
         del_timer(&dev->timer);
 
         /* Clear pid list */
-        for (i = 0; i < DRM_HASH_SIZE; i++) {
-                for (pt = dev->magiclist[i].head; pt; pt = next) {
-                        next = pt->next;
-                        drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
-                }
-                dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
+        list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
+                list_del(&pt->head);
+                drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
+                drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
         }
 
         /* Clear AGP information */