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nvme-pci: unquiesce admin queue on shutdown 

Just like IO queues, the admin queue also will not be restarted after a
controller shutdown. Unquiesce this queue so that we do not block
request dispatch on a permanently disabled controller.

Reported-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
hifive-unleashed-5.2
Keith Busch 2019-04-30 09:33:41 -06:00 committed by Christoph Hellwig
parent 9dc1a38ef1
commit c8e9e9b764
1 changed files with 4 additions and 1 deletions
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5
drivers/nvme/host/pci.c
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@ -2437,8 +2437,11 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
* must flush all entered requests to their failed completion to avoid
* deadlocking blk-mq hot-cpu notifier.
*/
if (shutdown)
if (shutdown) {
nvme_start_queues(&dev->ctrl);
if (dev->ctrl.admin_q && !blk_queue_dying(dev->ctrl.admin_q))
blk_mq_unquiesce_queue(dev->ctrl.admin_q);
}
mutex_unlock(&dev->shutdown_lock);
}