5.15-stable review patch. If anyone has any objections, please let me know.

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From: Lukas Wunner lukas@wunner.de

[ Upstream commit 5d03847175e81e86d4865456c15638faaf7c0634 ]

The thunderbolt driver sets up device link dependencies from hotplug ports to the Host Router (aka Native Host Interface, NHI). When resuming from system sleep, this allows the Host Router to re-establish tunnels to attached Thunderbolt devices before the hotplug ports resume.

To identify the hotplug ports, the driver utilizes the is_hotplug_bridge flag which also encompasses ACPI slots handled by the ACPI hotplug driver.

Thunderbolt hotplug ports are always Hot-Plug Capable PCIe ports, so it is more apt to identify them with the is_pciehp flag.

Similarly, hotplug ports on older Thunderbolt controllers have broken MSI support and are quirked to use legacy INTx interrupts instead. The quirk identifies them with is_hotplug_bridge, even though all affected ports are also matched by is_pciehp. So use is_pciehp here as well.

Signed-off-by: Lukas Wunner lukas@wunner.de Acked-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/quirks.c | 2 +- drivers/thunderbolt/tb.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7cc346fff87e3..7597aedc05c37 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3693,7 +3693,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf80, quirk_no_pm_reset); */ static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev) { - if (pdev->is_hotplug_bridge && + if (pdev->is_pciehp && (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C || pdev->revision <= 1)) pdev->no_msi = 1; diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 8bf45da1012e8..abe171769dc7e 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -1698,7 +1698,7 @@ static void tb_apple_add_links(struct tb_nhi *nhi) if (!pci_is_pcie(pdev)) continue; if (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM || - !pdev->is_hotplug_bridge) + !pdev->is_pciehp) continue;

link = device_link_add(&pdev->dev, &nhi->pdev->dev,