Merge branch 'merge'

[pandora-kernel.git] / arch / powerpc / platforms / pseries / eeh.c

diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 9b2b1cb..5a23ce5 100644 (file)
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -691,11 +691,11 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
 {
        struct eeh_early_enable_info *info = data;
        int ret;
-       char *status = get_property(dn, "status", NULL);
-       u32 *class_code = (u32 *)get_property(dn, "class-code", NULL);
-       u32 *vendor_id = (u32 *)get_property(dn, "vendor-id", NULL);
-       u32 *device_id = (u32 *)get_property(dn, "device-id", NULL);
-       u32 *regs;
+       const char *status = get_property(dn, "status", NULL);
+       const u32 *class_code = get_property(dn, "class-code", NULL);
+       const u32 *vendor_id = get_property(dn, "vendor-id", NULL);
+       const u32 *device_id = get_property(dn, "device-id", NULL);
+       const u32 *regs;
        int enable;
        struct pci_dn *pdn = PCI_DN(dn);
 
@@ -737,7 +737,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
 
        /* Ok... see if this device supports EEH.  Some do, some don't,
         * and the only way to find out is to check each and every one. */
-       regs = (u32 *)get_property(dn, "reg", NULL);
+       regs = get_property(dn, "reg", NULL);
        if (regs) {
                /* First register entry is addr (00BBSS00)  */
                /* Try to enable eeh */
@@ -865,7 +865,7 @@ void __init eeh_init(void)
  * on the CEC architecture, type of the device, on earlier boot
  * command-line arguments & etc.
  */
-void eeh_add_device_early(struct device_node *dn)
+static void eeh_add_device_early(struct device_node *dn)
 {
        struct pci_controller *phb;
        struct eeh_early_enable_info info;
@@ -882,7 +882,6 @@ void eeh_add_device_early(struct device_node *dn)
        info.buid_lo = BUID_LO(phb->buid);
        early_enable_eeh(dn, &info);
 }
-EXPORT_SYMBOL_GPL(eeh_add_device_early);
 
 void eeh_add_device_tree_early(struct device_node *dn)
 {
@@ -893,20 +892,6 @@ void eeh_add_device_tree_early(struct device_node *dn)
 }
 EXPORT_SYMBOL_GPL(eeh_add_device_tree_early);
 
-void eeh_add_device_tree_late(struct pci_bus *bus)
-{
-       struct pci_dev *dev;
-
-       list_for_each_entry(dev, &bus->devices, bus_list) {
-               eeh_add_device_late(dev);
-               if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-                       struct pci_bus *subbus = dev->subordinate;
-                       if (subbus)
-                               eeh_add_device_tree_late(subbus);
-               }
-       }
-}
-
 /**
  * eeh_add_device_late - perform EEH initialization for the indicated pci device
  * @dev: pci device for which to set up EEH
@@ -914,7 +899,7 @@ void eeh_add_device_tree_late(struct pci_bus *bus)
  * This routine must be used to complete EEH initialization for PCI
  * devices that were added after system boot (e.g. hotplug, dlpar).
  */
-void eeh_add_device_late(struct pci_dev *dev)
+static void eeh_add_device_late(struct pci_dev *dev)
 {
        struct device_node *dn;
        struct pci_dn *pdn;
@@ -933,16 +918,33 @@ void eeh_add_device_late(struct pci_dev *dev)
 
        pci_addr_cache_insert_device (dev);
 }
-EXPORT_SYMBOL_GPL(eeh_add_device_late);
+
+void eeh_add_device_tree_late(struct pci_bus *bus)
+{
+       struct pci_dev *dev;
+
+       list_for_each_entry(dev, &bus->devices, bus_list) {
+               eeh_add_device_late(dev);
+               if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+                       struct pci_bus *subbus = dev->subordinate;
+                       if (subbus)
+                               eeh_add_device_tree_late(subbus);
+               }
+       }
+}
+EXPORT_SYMBOL_GPL(eeh_add_device_tree_late);
 
 /**
  * eeh_remove_device - undo EEH setup for the indicated pci device
  * @dev: pci device to be removed
  *
- * This routine should be when a device is removed from a running
- * system (e.g. by hotplug or dlpar).
+ * This routine should be called when a device is removed from
+ * a running system (e.g. by hotplug or dlpar).  It unregisters
+ * the PCI device from the EEH subsystem.  I/O errors affecting
+ * this device will no longer be detected after this call; thus,
+ * i/o errors affecting this slot may leave this device unusable.
  */
-void eeh_remove_device(struct pci_dev *dev)
+static void eeh_remove_device(struct pci_dev *dev)
 {
        struct device_node *dn;
        if (!dev || !eeh_subsystem_enabled)
@@ -955,24 +957,22 @@ void eeh_remove_device(struct pci_dev *dev)
        pci_addr_cache_remove_device(dev);
 
        dn = pci_device_to_OF_node(dev);
-       PCI_DN(dn)->pcidev = NULL;
-       pci_dev_put (dev);
+       if (PCI_DN(dn)->pcidev) {
+               PCI_DN(dn)->pcidev = NULL;
+               pci_dev_put (dev);
+       }
 }
-EXPORT_SYMBOL_GPL(eeh_remove_device);
 
 void eeh_remove_bus_device(struct pci_dev *dev)
 {
+       struct pci_bus *bus = dev->subordinate;
+       struct pci_dev *child, *tmp;
+
        eeh_remove_device(dev);
-       if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-               struct pci_bus *bus = dev->subordinate;
-               struct list_head *ln;
-               if (!bus)
-                       return; 
-               for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) {
-                       struct pci_dev *pdev = pci_dev_b(ln);
-                       if (pdev)
-                               eeh_remove_bus_device(pdev);
-               }
+
+       if (bus && dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+               list_for_each_entry_safe(child, tmp, &bus->devices, bus_list)
+                        eeh_remove_bus_device(child);
        }
 }
 EXPORT_SYMBOL_GPL(eeh_remove_bus_device);