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 <lukas@xxxxxxxxx>
---
drivers/pci/hotplug/pciehp_hpc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index ebd342bda235..d783da1dbd24 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -995,7 +995,7 @@ static inline int pcie_hotplug_depth(struct pci_dev *dev)
while (bus->parent) {
bus = bus->parent;
- if (bus->self && bus->self->is_hotplug_bridge)
+ if (bus->self && bus->self->is_pciehp)
depth++;
}
--
2.47.2
