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authorXiang Chen <chenxiang66@hisilicon.com>2021-12-20 14:21:36 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2021-12-23 07:38:31 +0300
commitae9b69e85eb7ecb32ddce7c04a10a3c69ad60e52 (patch)
tree6548d6e7619ef3d85f7fba7e532947292ec5ca60 /tools/perf/scripts/python/export-to-sqlite.py
parentbf19aea4607cb5f4a652ab70d8d8035a72a6b8da (diff)
downloadlinux-ae9b69e85eb7ecb32ddce7c04a10a3c69ad60e52.tar.xz
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>
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