From: Keith Busch <keith.busch@intel.com>
Date: Mon, 11 Feb 2019 16:23:50 +0000 (-0700)
Subject: nvme-pci: add missing unlock for reset error
X-Git-Tag: v4.19.29~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7066774e60e4d2c1108f99822725af5de19f1c78;p=platform%2Fkernel%2Flinux-rpi.git

nvme-pci: add missing unlock for reset error

[ Upstream commit 4726bcf30fad37cc555cd9dcd6c73f2b2668c879 ]

The reset work holds a mutex to prevent races with removal modifying the
same resources, but was unlocking only on success. Unlock on failure
too.

Fixes: 5c959d73dba64 ("nvme-pci: fix rapid add remove sequence")
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 6398ffb..7b9ef8e 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2263,15 +2263,15 @@ static void nvme_reset_work(struct work_struct *work)
 	mutex_lock(&dev->shutdown_lock);
 	result = nvme_pci_enable(dev);
 	if (result)
-		goto out;
+		goto out_unlock;
 
 	result = nvme_pci_configure_admin_queue(dev);
 	if (result)
-		goto out;
+		goto out_unlock;
 
 	result = nvme_alloc_admin_tags(dev);
 	if (result)
-		goto out;
+		goto out_unlock;
 
 	/*
 	 * Limit the max command size to prevent iod->sg allocations going
@@ -2354,6 +2354,8 @@ static void nvme_reset_work(struct work_struct *work)
 	nvme_start_ctrl(&dev->ctrl);
 	return;
 
+ out_unlock:
+	mutex_unlock(&dev->shutdown_lock);
  out:
 	nvme_remove_dead_ctrl(dev, result);
 }