===================================================================
@@ -820,7 +820,6 @@ 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);
@@ -1829,6 +1828,7 @@ int pci_setup_device(struct pci_dev *dev
int err, pos = 0;
struct pci_bus_region region;
struct resource *res;
+ u32 linkcap;
hdr_type = pci_hdr_type(dev);
@@ -1876,6 +1876,10 @@ 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);
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@orcam.me.uk> --- No change from v8. Changes from v7: - Reorder from 3/7. Changes from v6: - Regenerate against 6.3-rc5. New change in v6. --- drivers/pci/probe.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) linux-pcie-link-active-reporting-early.diff