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Subject[PATCH 4.14 151/496] nvme-pci: Fix nvme queue cleanup if IRQ setup fails
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jianchao Wang <jianchao.w.wang@oracle.com>

[ Upstream commit f25a2dfc20e3a3ed8fe6618c331799dd7bd01190 ]

This patch fixes nvme queue cleanup if requesting an IRQ handler for
the queue's vector fails. It does this by resetting the cq_vector to
the uninitialized value of -1 so it is ignored for a controller reset.

Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
[changelog updates, removed misc whitespace changes]
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/nvme/host/pci.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1322,7 +1322,7 @@ static int nvme_create_queue(struct nvme
nvmeq->cq_vector = qid - 1;
result = adapter_alloc_cq(dev, qid, nvmeq);
if (result < 0)
- return result;
+ goto release_vector;

result = adapter_alloc_sq(dev, qid, nvmeq);
if (result < 0)
@@ -1336,9 +1336,12 @@ static int nvme_create_queue(struct nvme
return result;

release_sq:
+ dev->online_queues--;
adapter_delete_sq(dev, qid);
release_cq:
adapter_delete_cq(dev, qid);
+ release_vector:
+ nvmeq->cq_vector = -1;
return result;
}


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