nvme-pci: use simple suspend when a HMB is enabled

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While the NVMe specification allows the device to access the host memory
buffer in host DRAM from all power states, hosts will fail access to
DRAM during S3 and similar power states.

Fixes: d916b1be94 ("nvme-pci: use host managed power state for suspend")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2020-06-03 08:24:17 +02:00 • committed by Jens Axboe

parent c9c12e51b8

commit b97120b15e

1 changed files with 6 additions and 0 deletions

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drivers/nvme/host/pci.c

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