8 files changed, 21 insertions, 37 deletions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index ab7d06cd0099..9c2137dae429 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -11,6 +11,7 @@
 #include <linux/pci.h>
 #include <linux/errno.h>
 #include <linux/ioport.h>
+#include <linux/of.h>
 #include <linux/proc_fs.h>
 #include <linux/slab.h>
 
@@ -332,6 +333,7 @@ void __weak pcibios_bus_add_device(struct pci_dev *pdev) { }
  */
 void pci_bus_add_device(struct pci_dev *dev)
 {
+	struct device_node *dn = dev->dev.of_node;
 	int retval;
 
 	/*
@@ -346,7 +348,7 @@ void pci_bus_add_device(struct pci_dev *dev)
 	pci_proc_attach_device(dev);
 	pci_bridge_d3_update(dev);
 
-	dev->match_driver = true;
+	dev->match_driver = !dn || of_device_is_available(dn);
 	retval = device_attach(&dev->dev);
 	if (retval < 0 && retval != -EPROBE_DEFER)
 		pci_warn(dev, "device attach failed (%d)\n", retval);
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index 8d49bad7f847..0859be86e718 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -179,7 +179,6 @@ config PCI_MVEBU
 	depends on MVEBU_MBUS
 	depends on ARM
 	depends on OF
-	depends on BROKEN
 	select PCI_BRIDGE_EMUL
 	help
 	 Add support for Marvell EBU PCIe controller. This PCIe controller
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index cf61733bf78d..9952057c8819 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -485,20 +485,15 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp)
 	if (ret)
 		goto err_remove_edma;
 
-	if (dw_pcie_link_up(pci)) {
-		dw_pcie_print_link_status(pci);
-	} else {
+	if (!dw_pcie_link_up(pci)) {
 		ret = dw_pcie_start_link(pci);
 		if (ret)
 			goto err_remove_edma;
-
-		if (pci->ops && pci->ops->start_link) {
-			ret = dw_pcie_wait_for_link(pci);
-			if (ret)
-				goto err_stop_link;
-		}
 	}
 
+	/* Ignore errors, the link may come up later */
+	dw_pcie_wait_for_link(pci);
+
 	bridge->sysdata = pp;
 
 	ret = pci_host_probe(bridge);
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index c87848cd8686..1f2ee71da4da 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -644,20 +644,9 @@ void dw_pcie_disable_atu(struct dw_pcie *pci, u32 dir, int index)
 	dw_pcie_writel_atu(pci, dir, index, PCIE_ATU_REGION_CTRL2, 0);
 }
 
-void dw_pcie_print_link_status(struct dw_pcie *pci)
-{
-	u32 offset, val;
-
-	offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
-	val = dw_pcie_readw_dbi(pci, offset + PCI_EXP_LNKSTA);
-
-	dev_info(pci->dev, "PCIe Gen.%u x%u link up\n",
-		 FIELD_GET(PCI_EXP_LNKSTA_CLS, val),
-		 FIELD_GET(PCI_EXP_LNKSTA_NLW, val));
-}
-
 int dw_pcie_wait_for_link(struct dw_pcie *pci)
 {
+	u32 offset, val;
 	int retries;
 
 	/* Check if the link is up or not */
@@ -673,7 +662,12 @@ int dw_pcie_wait_for_link(struct dw_pcie *pci)
 		return -ETIMEDOUT;
 	}
 
-	dw_pcie_print_link_status(pci);
+	offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
+	val = dw_pcie_readw_dbi(pci, offset + PCI_EXP_LNKSTA);
+
+	dev_info(pci->dev, "PCIe Gen.%u x%u link up\n",
+		 FIELD_GET(PCI_EXP_LNKSTA_CLS, val),
+		 FIELD_GET(PCI_EXP_LNKSTA_NLW, val));
 
 	return 0;
 }
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 615660640801..79713ce075cc 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -429,7 +429,6 @@ void dw_pcie_setup(struct dw_pcie *pci);
 void dw_pcie_iatu_detect(struct dw_pcie *pci);
 int dw_pcie_edma_detect(struct dw_pcie *pci);
 void dw_pcie_edma_remove(struct dw_pcie *pci);
-void dw_pcie_print_link_status(struct dw_pcie *pci);
 
 static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
 {
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 328d1e416014..601129772b2d 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -498,6 +498,7 @@ static void enable_slot(struct acpiphp_slot *slot, bool bridge)
 				acpiphp_native_scan_bridge(dev);
 		}
 	} else {
+		LIST_HEAD(add_list);
 		int max, pass;
 
 		acpiphp_rescan_slot(slot);
@@ -511,10 +512,15 @@ static void enable_slot(struct acpiphp_slot *slot, bool bridge)
 				if (pass && dev->subordinate) {
 					check_hotplug_bridge(slot, dev);
 					pcibios_resource_survey_bus(dev->subordinate);
+					if (pci_is_root_bus(bus))
+						__pci_bus_size_bridges(dev->subordinate, &add_list);
 				}
 			}
 		}
-		pci_assign_unassigned_bridge_resources(bus->self);
+		if (pci_is_root_bus(bus))
+			__pci_bus_assign_resources(bus, &add_list, NULL);
+		else
+			pci_assign_unassigned_bridge_resources(bus->self);
 	}
 
 	acpiphp_sanitize_bus(bus);
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 5bc239e22d58..2af64bcb7da3 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -34,11 +34,6 @@ int pci_set_of_node(struct pci_dev *dev)
 	if (!node)
 		return 0;
 
-	if (!of_device_is_available(node)) {
-		of_node_put(node);
-		return -ENODEV;
-	}
-
 	device_set_node(&dev->dev, of_fwnode_handle(node));
 	return 0;
 }
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 83c0ab50676d..11636634ae51 100644
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -22,7 +22,6 @@
 #include <linux/bitops.h>
 #include <linux/time.h>
 #include <linux/ktime.h>
-#include <linux/swiotlb.h>
 #include <xen/platform_pci.h>
 
 #include <asm/xen/swiotlb-xen.h>
@@ -669,11 +668,6 @@ static int pcifront_connect_and_init_dma(struct pcifront_device *pdev)
 
 	spin_unlock(&pcifront_dev_lock);
 
-	if (!err && !is_swiotlb_active(&pdev->xdev->dev)) {
-		err = pci_xen_swiotlb_init_late();
-		if (err)
-			dev_err(&pdev->xdev->dev, "Could not setup SWIOTLB!\n");
-	}
 	return err;
 }