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(parent: 936b33f) | patch
nvme-pci: init shadow doorbell after each reset
authorMaxim Levitsky <mlevitsk@redhat.com>
Thu, 2 May 2019 11:31:33 +0000 (14:31 +0300)
committerChristoph Hellwig <hch@lst.de>
Mon, 13 May 2019 14:00:03 +0000 (16:00 +0200)
commite8fd41bb3cf149fb6df4be714f94fc04871ccbce
tree4ae9bf361ce5b55ffd690fd23f59aa16558c3862tree | snapshot
parent936b33f7243fa1e54c8f4f2febd3472cc00e66fdcommit | diff
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>
drivers/nvme/host/pci.c diff | blob | history
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