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 439b9f4eb246aaccb6752e589cee21379f53d386..5c58e0ffa3ac7b4e07af3878591c9f573b4c595c 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2283,15 +2283,15 @@ 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
@@ -2374,6 +2374,8 @@ 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);
 }