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PCI: pciehp: Use is_pciehp instead of is_hotplug_bridge

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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@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/59a097376a2bb493da9efd66fb196ae4b66f8a09.1752390102.git.lukas@wunner.de
This commit is contained in:
Lukas Wunner
2025-07-13 16:31:03 +02:00
committed by Bjorn Helgaas
parent 1d60796a62
commit c6036c3394
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/hotplug/pciehp_hpc.c
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@@ -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++;
}