diff options
| -rw-r--r-- | linux-core/drm_bufs.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c index 031f8ba0..f6ff75ab 100644 --- a/linux-core/drm_bufs.c +++ b/linux-core/drm_bufs.c @@ -380,10 +380,12 @@ int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map) struct drm_map_list *r_list = NULL, *list_t; drm_dma_handle_t dmah; int found = 0; + struct drm_master *master; /* Find the list entry for the map and remove it */ list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { if (r_list->map == map) { + master = r_list->master; list_del(&r_list->head); drm_ht_remove_key(&dev->map_hash, r_list->user_token >> PAGE_SHIFT); @@ -413,9 +415,13 @@ int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map) break; case _DRM_SHM: vfree(map->handle); - dev->sigdata.lock = dev->primary->master->lock.hw_lock = NULL; /* SHM removed */ - dev->primary->master->lock.file_priv = NULL; - wake_up_interruptible(&dev->primary->master->lock.lock_queue); + if (master) { + if (dev->sigdata.lock == master->lock.hw_lock) + dev->sigdata.lock = NULL; + master->lock.hw_lock = NULL; /* SHM removed */ + master->lock.file_priv = NULL; + wake_up_interruptible(&master->lock.lock_queue); + } break; case _DRM_AGP: case _DRM_SCATTER_GATHER: |