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(parent: 82ae071) | patch
nvme-pci: allow use of cmb on v1.4 controllers
authorKlaus Jensen <k.jensen@samsung.com>
Fri, 15 Jan 2021 06:30:46 +0000 (07:30 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 7 Feb 2021 14:37:16 +0000 (15:37 +0100)
commit3e554aa3d08a1d319b60c8e8db31dcdd97f3b945
treea40b2811a7c43a65263cd764ca9d9904b8696c08tree | snapshot
parent82ae0714c344ac707900aacd9805773474059282commit | diff
nvme-pci: allow use of cmb on v1.4 controllers

[ Upstream commit 20d3bb92e84d417b0494a3b6867f0c86713db257 ]

Since NVMe v1.4 the Controller Memory Buffer must be explicitly enabled
by the host.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
[hch: avoid a local variable and add a comment]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/nvme/host/pci.c diff | blob | history
include/linux/nvme.h diff | blob | history