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Date: Thu, 13 Jun 2019 10:33:23 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Yufen Yu <yuyufen@...wei.com>, Keith Busch <keith.busch@...el.com>, Christoph Hellwig <hch@....de>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.14 40/81] nvme-pci: unquiesce admin queue on shutdown [ Upstream commit c8e9e9b7646ebe1c5066ddc420d7630876277eb4 ] 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@...wei.com> Signed-off-by: Keith Busch <keith.busch@...el.com> Signed-off-by: Christoph Hellwig <hch@....de> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/nvme/host/pci.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 06355ca832db..cd11cced3678 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2105,8 +2105,11 @@ 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); } -- 2.20.1
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