The comments in `acpi_pci_bridge_d3` make an assertion that all devices behind a PCIe root port that supports D3 also support D3. This was pointed out however that it's no guarantee but rather a reasonable assumption for the ecosystem used for Thunderbolt and USB4. Update the comment to use weaker language and clarifying this is an assumption. Suggested-by: Bjorn Helgaas <helgaas@xxxxxxxxxx> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx> --- v4->v5: * New patch drivers/pci/pci-acpi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 91c165ea4346..4f12d4fca808 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -989,8 +989,8 @@ bool acpi_pci_bridge_d3(struct pci_dev *dev) /* * The ACPI firmware will provide the device-specific properties through * _DSD configuration object. Look for the 'HotPlugSupportInD3' property - * for the root port and if it is set we know the hierarchy behind it - * supports D3 just fine. + * for the root port and if it is set we make an assumption that the + * hierarchy behind it supports D3 as well. */ rpdev = pcie_find_root_port(dev); if (!rpdev) -- 2.34.1
