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linux/drivers/pci/pcie
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Lukas Wunner 365cc41d52 PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge 
commit 1d60796a62 upstream.

The PCIe port driver erroneously creates a subdevice for hotplug on ACPI
slots which are handled by the ACPI hotplug driver.

Avoid by checking the is_pciehp flag instead of is_hotplug_bridge when
deciding whether to create a subdevice.  The latter encompasses ACPI slots
whereas the former doesn't.

The superfluous subdevice has no real negative impact, it occupies memory
and interrupt resources but otherwise just sits there waiting for
interrupts from the slot that are never signaled.

Fixes: f841522283 ("PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org # v4.7+
Link: https://patch.msgid.link/40d5a5fe8d40595d505949c620a067fa110ee85e.1752390102.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-08-28 16:30:59 +02:00
..
aer.c PCI/AER: Disable AER service on suspend 2024-06-18 14:49:44 -05:00
aer_inject.c PCI/AER: Use PCI_DEVID() macro in aer_inject() 2024-09-01 17:05:45 +00:00
aspm.c PCI/ASPM: Fix L1SS saving 2025-08-15 12:14:12 +02:00
dpc.c PCI/DPC: Log Error Source ID only when valid 2025-06-19 15:32:10 +02:00
edr.c PCI/EDR: Align EDR_PORT_LOCATE_DSM with PCI Firmware r3.3 2024-05-08 15:08:39 -05:00
err.c PCI/ERR: Cleanup misleading indentation inside if conditions 2024-04-29 10:33:29 -05:00
Kconfig PCI/AER: Update aer-inject tool source URL 2024-04-17 10:35:43 -05:00
Makefile PCI/ASPM: Always build aspm.c 2024-03-07 14:29:17 -06:00
pme.c PCI/PME: Use FIELD_GET() 2023-10-24 16:55:45 -05:00
portdrv.c PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge 2025-08-28 16:30:59 +02:00
portdrv.h PCI: Make pcie_port_bus_type const 2024-02-08 14:59:47 -06:00
ptm.c PCI/PTM: Use FIELD_GET() 2023-10-24 16:55:45 -05:00
rcec.c PCI/RCEC: Fix RCiEP device to RCEC association 2021-03-10 15:10:46 -06:00