free dummy read page if fail to init mm

Since drm_bo_driver_init will be called in driver_load, we need to free
what it alloced when error to avoid memory leak.

diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index 301f946..0470825 100644 (file)
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -2406,8 +2406,14 @@ int drm_bo_driver_init(struct drm_device *dev)
         * Other types need to be driver / IOCTL initialized.
         */
        ret = drm_bo_init_mm(dev, DRM_BO_MEM_LOCAL, 0, 0, 1);
-       if (ret)
+       if (ret) {
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15))
+               ClearPageReserved(bm->dummy_read_page);
+#endif
+               __free_page(bm->dummy_read_page);
+               bm->dummy_read_page = NULL;
                goto out_unlock;
+       }
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
        INIT_WORK(&bm->wq, &drm_bo_delayed_workqueue, dev);