Determine whether Data Link Layer Link Active Reporting is available ahead of calling any fixups so that the cached value can be used there and later on. Signed-off-by: Maciej W. Rozycki <macro@xxxxxxxxxxx> --- New change in v6. --- drivers/pci/probe.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) linux-pcie-link-active-reporting-early.diff Index: linux-macro/drivers/pci/probe.c =================================================================== --- linux-macro.orig/drivers/pci/probe.c +++ linux-macro/drivers/pci/probe.c @@ -819,7 +819,6 @@ static void pci_set_bus_speed(struct pci pcie_capability_read_dword(bridge, PCI_EXP_LNKCAP, &linkcap); bus->max_bus_speed = pcie_link_speed[linkcap & PCI_EXP_LNKCAP_SLS]; - bridge->link_active_reporting = !!(linkcap & PCI_EXP_LNKCAP_DLLLARC); pcie_capability_read_word(bridge, PCI_EXP_LNKSTA, &linksta); pcie_update_link_speed(bus, linksta); @@ -1828,6 +1827,7 @@ int pci_setup_device(struct pci_dev *dev int pos = 0; struct pci_bus_region region; struct resource *res; + u32 linkcap; hdr_type = pci_hdr_type(dev); @@ -1873,6 +1873,10 @@ int pci_setup_device(struct pci_dev *dev /* "Unknown power state" */ dev->current_state = PCI_UNKNOWN; + /* Set it early to make it available to fixups, etc. */ + pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &linkcap); + dev->link_active_reporting = !!(linkcap & PCI_EXP_LNKCAP_DLLLARC); + /* Early fixups, before probing the BARs */ pci_fixup_device(pci_fixup_early, dev);
