linux-kernel - [PATCH v3] Always shutdown the controller when nvme_remove_dead

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Date:   Fri, 11 Oct 2019 10:28:26 -0400
From:   Tyler Ramer <tyaramer@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     tyaramer@...il.com, Balbir Singh <sblbir@...zon.com>,
        Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3] Always shutdown the controller when nvme_remove_dead_ctrl is reached.

nvme_timeout() will go through nvme_should_reset() path which won't
shutdown a device during nvme_dev_disable(). If the reset fails, then
the controller is bad and won't be coming back online, so it makes sense
to explicitly call a full shutdown during nvme_remove_dead_ctrl().

Signed-off-by: Tyler Ramer <tyaramer@...il.com>
Reviewed-by: Balbir Singh <sblbir@...zon.com>

---
Changes since v2:
  * Clean up commit message with comment from Balbir
  * Still call nvme_kill_queues()
---
 drivers/nvme/host/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c0808f9eb8ab..c3f5ba22c625 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2509,7 +2509,7 @@ static void nvme_pci_free_ctrl(struct nvme_ctrl *ctrl)
 static void nvme_remove_dead_ctrl(struct nvme_dev *dev)
 {
 	nvme_get_ctrl(&dev->ctrl);
-	nvme_dev_disable(dev, false);
+	nvme_dev_disable(dev, true);
 	nvme_kill_queues(&dev->ctrl);
 	if (!queue_work(nvme_wq, &dev->remove_work))
 		nvme_put_ctrl(&dev->ctrl);
-- 
2.23.0