[PATCH] PCI: remove PCI_BRIDGE_CTL_VGA handling from setup-bus.c

[linux-2.6.git] / drivers / pci / probe.c

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 6a0a82f0508bf2d81112cd5f2236acad46a635b6..93e8a878ea951d379c2c1af147193928c728c480 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -239,9 +239,8 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
 
        if (dev->transparent) {
                printk(KERN_INFO "PCI: Transparent bridge - %s\n", pci_name(dev));
-               for(i = 0; i < PCI_BUS_NUM_RESOURCES; i++)
-                       child->resource[i] = child->parent->resource[i];
-               return;
+               for(i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
+                       child->resource[i] = child->parent->resource[i - 3];
        }
 
        for(i=0; i<3; i++)
@@ -398,6 +397,16 @@ static void pci_enable_crs(struct pci_dev *dev)
        pci_write_config_word(dev, rpcap + PCI_EXP_RTCTL, rpctl);
 }
 
+static void __devinit pci_fixup_parent_subordinate_busnr(struct pci_bus *child, int max)
+{
+       struct pci_bus *parent = child->parent;
+       while (parent->parent && parent->subordinate < max) {
+               parent->subordinate = max;
+               pci_write_config_byte(parent->self, PCI_SUBORDINATE_BUS, max);
+               parent = parent->parent;
+       }
+}
+
 unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus);
 
 /*
@@ -498,8 +507,14 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
                pci_write_config_dword(dev, PCI_PRIMARY_BUS, buses);
 
                if (!is_cardbus) {
-                       child->bridge_ctl = PCI_BRIDGE_CTL_NO_ISA;
-
+                       child->bridge_ctl = bctl | PCI_BRIDGE_CTL_NO_ISA;
+                       /*
+                        * Adjust subordinate busnr in parent buses.
+                        * We do this before scanning for children because
+                        * some devices may not be detected if the bios
+                        * was lazy.
+                        */
+                       pci_fixup_parent_subordinate_busnr(child, max);
                        /* Now we can scan all subordinate buses... */
                        max = pci_scan_child_bus(child);
                } else {
@@ -513,6 +528,7 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max
                                                        max+i+1))
                                        break;
                        max += i;
+                       pci_fixup_parent_subordinate_busnr(child, max);
                }
                /*
                 * Set the subordinate bus number to its real value.