Message ID | 20200310042623.20779-8-bvanassche@acm.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | Improve changing the number of hardware queues | expand |
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 80d3dcb8722c..d21c82c8863f 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -1469,7 +1469,12 @@ static const struct blk_mq_ops null_mq_ops = { static void null_del_dev(struct nullb *nullb) { - struct nullb_device *dev = nullb->dev; + struct nullb_device *dev; + + if (!nullb) + return; + + dev = nullb->dev; ida_simple_remove(&nullb_indexes, nullb->index);