Hacks to mask a race between HBA scan job and bridge re-configuration(s) during hotplug. I don't like it a bit but it something that could be done quickly and solves problems that were reported. Other options to discuss/possibly more invasive: 1: make sure pci_assign_unassigned_bridge_resources() doesn't reconfigure bridge if it's not necessary. 2. make SCSI_SCAN_ASYNC job wait till hotplug is finished for all slots on the bridge or somehow restart the job if it fails 3. any other ideas? 1st reported: https://lore.kernel.org/r/9eb669c0-d8f2-431d-a700-6da13053ae54@xxxxxxxxxxx CC: Dongli Zhang <dongli.zhang@xxxxxxxxxx> CC: linux-acpi@xxxxxxxxxxxxxxx CC: linux-pci@xxxxxxxxxxxxxxx CC: imammedo@xxxxxxxxxx CC: mst@xxxxxxxxxx CC: rafael@xxxxxxxxxx CC: lenb@xxxxxxxxxx CC: bhelgaas@xxxxxxxxxx CC: mika.westerberg@xxxxxxxxxxxxxxx CC: boris.ostrovsky@xxxxxxxxxx CC: joe.jin@xxxxxxxxxx CC: stable@xxxxxxxxxxxxxxx CC: linux-kernel@xxxxxxxxxxxxxxx CC: Fiona Ebner <f.ebner@xxxxxxxxxxx> CC: Thomas Lamprecht <t.lamprecht@xxxxxxxxxxx> Igor Mammedov (2): PCI: acpiphp: enable slot only if it hasn't been enabled already PCI: acpiphp: slowdown hotplug if hotplugging multiple devices at a time drivers/pci/hotplug/acpiphp_glue.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) -- 2.39.3