From: Keith Busch <keith.busch@intel.com>
Date: Tue, 14 May 2019 20:10:41 +0000 (-0600)
Subject: nvme-pci: Don't disable on timeout in reset state
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=39a9dd81f864aa20be896bb34b4bbc2501a2453d;p=android-x86%2Fkernel.git

nvme-pci: Don't disable on timeout in reset state

The reset state doesn't dispatch commands that it needs to wait for
anymore. If a timeout occurs in this state, the reset work is already
disabling the controller, so just reset the request's timer.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <keith.busch@intel.com>
---

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d4e442160048..c72755311ffa 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1298,13 +1298,14 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
 		shutdown = true;
 		/* fall through */
 	case NVME_CTRL_CONNECTING:
-	case NVME_CTRL_RESETTING:
 		dev_warn_ratelimited(dev->ctrl.device,
 			 "I/O %d QID %d timeout, disable controller\n",
 			 req->tag, nvmeq->qid);
 		nvme_dev_disable(dev, shutdown);
 		nvme_req(req)->flags |= NVME_REQ_CANCELLED;
 		return BLK_EH_DONE;
+	case NVME_CTRL_RESETTING:
+		return BLK_EH_RESET_TIMER;
 	default:
 		break;
 	}