diff options
| author | Maxim Levitsky <mlevitsk@redhat.com> | 2019-05-02 13:31:33 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2019-05-13 16:00:03 +0200 |
| commit | e8fd41bb3cf149fb6df4be714f94fc04871ccbce (patch) | |
| tree | 4ae9bf361ce5b55ffd690fd23f59aa16558c3862 /drivers/nvme | |
| parent | brd: add cond_resched to brd_free_pages (diff) | |
| download | linux-e8fd41bb3cf149fb6df4be714f94fc04871ccbce.tar.xz linux-e8fd41bb3cf149fb6df4be714f94fc04871ccbce.zip | |
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 <mlevitsk@redhat.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Minwoo Im <minwoo.im@samsung.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/pci.c | 3 |
1 files changed, 1 insertions, 2 deletions
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; } |