1 files changed, 28 insertions, 3 deletions

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index b8c95a293f64..9f1bfbd81168 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -554,7 +554,8 @@ mvebu_pcie_find_port(struct mvebu_pcie *pcie, struct pci_bus *bus,
 		if (bus->number == 0 && port->devfn == devfn)
 			return port;
 		if (bus->number != 0 &&
-		    port->bridge.secondary_bus == bus->number)
+		    bus->number >= port->bridge.secondary_bus &&
+		    bus->number <= port->bridge.subordinate_bus)
 			return port;
 	}
 
@@ -578,7 +579,18 @@ static int mvebu_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
 	if (bus->number == 0)
 		return mvebu_sw_pci_bridge_write(port, where, size, val);
 
-	if (!port->haslink || PCI_SLOT(devfn) != 0)
+	if (!port->haslink)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	/*
+	 * On the secondary bus, we don't want to expose any other
+	 * device than the device physically connected in the PCIe
+	 * slot, visible in slot 0. In slot 1, there's a special
+	 * Marvell device that only makes sense when the Armada is
+	 * used as a PCIe endpoint.
+	 */
+	if (bus->number == port->bridge.secondary_bus &&
+	    PCI_SLOT(devfn) != 0)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/* Access the real PCIe interface */
@@ -609,7 +621,20 @@ static int mvebu_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
 	if (bus->number == 0)
 		return mvebu_sw_pci_bridge_read(port, where, size, val);
 
-	if (!port->haslink || PCI_SLOT(devfn) != 0) {
+	if (!port->haslink) {
+		*val = 0xffffffff;
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	}
+
+	/*
+	 * On the secondary bus, we don't want to expose any other
+	 * device than the device physically connected in the PCIe
+	 * slot, visible in slot 0. In slot 1, there's a special
+	 * Marvell device that only makes sense when the Armada is
+	 * used as a PCIe endpoint.
+	 */
+	if (bus->number == port->bridge.secondary_bus &&
+	    PCI_SLOT(devfn) != 0) {
 		*val = 0xffffffff;
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}