From e8fd41bb3cf149fb6df4be714f94fc04871ccbce Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Thu, 2 May 2019 14:31:33 +0300 Subject: nvme-pci: init shadow doorbell after each reset The spec states: "The settings are not retained across a Controller Level Reset" Therefore the driver must enable the shadow doorbell, after each reset. This was caught while testing the nvme driver over upcoming nvme-mdev device. Signed-off-by: Maxim Levitsky Reviewed-by: Keith Busch Reviewed-by: Minwoo Im Signed-off-by: Christoph Hellwig --- drivers/nvme/host/pci.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/nvme/host') diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 3e4fb891a95a..8ef3c67e05d6 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2280,8 +2280,6 @@ static int nvme_dev_add(struct nvme_dev *dev) return ret; } dev->ctrl.tagset = &dev->tagset; - - nvme_dbbuf_set(dev); } else { blk_mq_update_nr_hw_queues(&dev->tagset, dev->online_queues - 1); @@ -2289,6 +2287,7 @@ static int nvme_dev_add(struct nvme_dev *dev) nvme_free_queues(dev, dev->online_queues); } + nvme_dbbuf_set(dev); return 0; } -- cgit v1.2.3