[PATCH] powerpc/pseries: EEH Cleanup

This patch removes unnecessary exports, marks functions as static when
possible, and simplifies some list-related code.

Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 30 insertions, 32 deletions

diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 9b2b1cb117b3..780fb27a0099 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -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)
@@ -958,21 +960,17 @@ void eeh_remove_device(struct pci_dev *dev)
         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);