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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-11 16:07:33 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-11 16:07:33 -0700 |
commit | a58dfea29731a93339529ce48fe239b383011c7c (patch) | |
tree | 6f82eca0c9af51ae4784a99ea6e2431d5877d7f9 /drivers/nvme/host/pci.c | |
parent | b3597945c8a78bd1c4ad7e7ed4f972fdf78650f1 (diff) | |
parent | 9a6a5738abf82d6f467a31f1f6779e495462f7af (diff) |
Merge tag 'block-5.8-2020-06-11' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Some followup fixes for this merge window. In particular:
- Seqcount write missing preemption disable for stats (Ahmed)
- blktrace fixes (Chaitanya)
- Redundant initializations (Colin)
- Various small NVMe fixes (Chaitanya, Christoph, Daniel, Max,
Niklas, Rikard)
- loop flag bug regression fix (Martijn)
- blk-mq tagging fixes (Christoph, Ming)"
* tag 'block-5.8-2020-06-11' of git://git.kernel.dk/linux-block:
umem: remove redundant initialization of variable ret
pktcdvd: remove redundant initialization of variable ret
nvmet: fail outstanding host posted AEN req
nvme-pci: use simple suspend when a HMB is enabled
nvme-fc: don't call nvme_cleanup_cmd() for AENs
nvmet-tcp: constify nvmet_tcp_ops
nvme-tcp: constify nvme_tcp_mq_ops and nvme_tcp_admin_mq_ops
nvme: do not call del_gendisk() on a disk that was never added
blk-mq: fix blk_mq_all_tag_iter
blk-mq: split out a __blk_mq_get_driver_tag helper
blktrace: fix endianness for blk_log_remap()
blktrace: fix endianness in get_pdu_int()
blktrace: use errno instead of bi_status
block: nr_sects_write(): Disable preemption on seqcount write
block: remove the error argument to the block_bio_complete tracepoint
loop: Fix wrong masking of status flags
block/bio-integrity: don't free 'buf' if bio_integrity_add_page() failed
Diffstat (limited to 'drivers/nvme/host/pci.c')
-rw-r--r-- | drivers/nvme/host/pci.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index d690d5593a80..e2bacd369a88 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2950,9 +2950,15 @@ static int nvme_suspend(struct device *dev) * the PCI bus layer to put it into D3 in order to take the PCIe link * down, so as to allow the platform to achieve its minimum low-power * state (which may not be possible if the link is up). + * + * If a host memory buffer is enabled, shut down the device as the NVMe + * specification allows the device to access the host memory buffer in + * host DRAM from all power states, but hosts will fail access to DRAM + * during S3. */ if (pm_suspend_via_firmware() || !ctrl->npss || !pcie_aspm_enabled(pdev) || + ndev->nr_host_mem_descs || (ndev->ctrl.quirks & NVME_QUIRK_SIMPLE_SUSPEND)) return nvme_disable_prepare_reset(ndev, true); |