PCI: pciehp: Use is_pciehp instead of is_hotplug_bridge

The PCIe hotplug driver calculates the depth of a nested hotplug port by
looking at the is_hotplug_bridge flag. The depth is used as lockdep class
to tell hotplug ports apart.

The is_hotplug_bridge flag encompasses ACPI slots handled by the ACPI
hotplug driver, hence the calculated depth may be too high. Avoid by
checking the is_pciehp flag instead.

This glitch likely has no user-visible impact: ACPI slots typically only
exist at the Root Port level, not in nested hotplug hierarchies. Also,
CONFIG_LOCKDEP is usually only used by developers. So this is just for
the sake of correctness.

Signed-off-by: Lukas Wunner <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

drivers/pci/hotplug/pciehp_hpc.c

···
 
 	while (bus->parent) {
 		bus = bus->parent;
-		if (bus->self && bus->self->is_hotplug_bridge)
+		if (bus->self && bus->self->is_pciehp)
 			depth++;
 	}