Since all PCI Express device Functions are required to implement the PCI
Express Capability structure, Capabilities List bit in PCI Status Register
must be hardwired to 1b. Capabilities Pointer register (which is already
set by pci-bride-emul.c driver) is valid only when Capabilities List is set
to 1b.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Fixes: 23a5fba4d941 ("PCI: Introduce PCI bridge emulated config space common logic")
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/pci/pci-bridge-emul.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
index 6c75dc296984..d11633999df5 100644
--- a/drivers/pci/pci-bridge-emul.c
+++ b/drivers/pci/pci-bridge-emul.c
@@ -339,6 +339,7 @@ int pci_bridge_emul_init(struct pci_bridge_emul *bridge,
if (bridge->has_pcie) {
bridge->conf.capabilities_pointer = PCI_CAP_PCIE_START;
+ bridge->conf.status |= cpu_to_le16(PCI_STATUS_CAP_LIST);
bridge->pcie_conf.cap_id = PCI_CAP_ID_EXP;
bridge->pcie_conf.cap |= cpu_to_le16(PCI_EXP_TYPE_ROOT_PORT << 4);
bridge->pcie_cap_regs_behavior =
--
2.20.1
