X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=block%2Felevator.c;h=9b72dc7c8a5c98dcde87dc0d7e42d9a56f447776;hb=aebb1153ac54ddbbd3d3f0481a193f4bf0ead53b;hp=bc7baeec0d102014c07ec7308d54dbc2161e4ba9;hpb=05668381140309088443bf5dc53add4104610fbb;p=karo-tx-linux.git

diff --git a/block/elevator.c b/block/elevator.c
index bc7baeec0d10..9b72dc7c8a5c 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -765,7 +765,8 @@ void elv_unregister(struct elevator_type *e)
 		read_lock(&tasklist_lock);
 		do_each_thread(g, p) {
 			task_lock(p);
-			e->ops.trim(p->io_context);
+			if (p->io_context)
+				e->ops.trim(p->io_context);
 			task_unlock(p);
 		} while_each_thread(g, p);
 		read_unlock(&tasklist_lock);