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| author |   Xiang Chen <chenxiang66@hisilicon.com> | 2021-12-20 19:21:36 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2021-12-22 23:38:31 -0500 |
| commit | ae9b69e85eb7ecb32ddce7c04a10a3c69ad60e52 (patch) | |
| tree | 6548d6e7619ef3d85f7fba7e532947292ec5ca60 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | scsi: libsas: Defer works of new phys during suspend (diff) | |
| download | linux-dev-ae9b69e85eb7ecb32ddce7c04a10a3c69ad60e52.tar.xz linux-dev-ae9b69e85eb7ecb32ddce7c04a10a3c69ad60e52.zip | |
scsi: hisi_sas: Keep controller active between ISR of phyup and the event being processed
It is possible that controller may become suspended between processing a
phyup interrupt and the event being processed by libsas. As such, we can't
ensure the controller is active when processing the phyup event - this may
cause the phyup event to be lost or other issues. To avoid any possible
issues, add pm_runtime_get_noresume() in phyup interrupt handler and
pm_runtime_put_sync() in the work handler exit to ensure that we stay
always active. Since we only want to call pm_runtime_get_noresume() for v3
hw, signal this will a new event, HISI_PHYE_PHY_UP_PM.
Link: https://lore.kernel.org/r/1639999298-244569-14-git-send-email-chenxiang66@hisilicon.com
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions