Commit 64ee0ac0 authored Apr 12, 2018 by Keith Busch Committed by Jens Axboe Apr 12, 2018

nvme-pci: Skip queue deletion if there are no queues



User reported controller always retains CSTS.RDY to 1, which fails
controller disabling when resetting the controller. This is also before
the admin queue is allocated, and trying to disable an unallocated queue
results in a NULL dereference.

Reported-by: Alex Gagniuc <Alex_Gagniuc@Dellteam.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 6038aa53

drivers/nvme/host/pci.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2201,7 +2201,7 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)

		nvme_stop_queues(&dev->ctrl);

		if (!dead) {
		if (!dead && dev->ctrl.queue_count > 0) {
		/*
		* If the controller is still alive tell it to stop using the
		* host memory buffer. In theory the shutdown / reset should