[PATCH] PCI: Reduce nr of ptr derefs in drivers/pci/hotplug/rpaphp_pci.c

Here's a small patch to reduce the nr. of pointer dereferences in
drivers/pci/hotplug/rpaphp_pci.c

Benefits:
 - micro speed optimization due to fewer pointer derefs
 - generated code should be slightly smaller
 - better readability

note: due to lack of both hardware and cross-compile tools this patch is,
      unfortunately, completely untested.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index 6f21c73..396b54b 100644 (file)
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -336,13 +336,14 @@ EXPORT_SYMBOL_GPL(rpaphp_unconfig_pci_adapter);
 
 static int setup_pci_hotplug_slot_info(struct slot *slot)
 {
+       struct hotplug_slot_info *hotplug_slot_info = slot->hotplug_slot->info;
+
        dbg("%s Initilize the PCI slot's hotplug->info structure ...\n",
            __FUNCTION__);
-       rpaphp_get_power_status(slot, &slot->hotplug_slot->info->power_status);
+       rpaphp_get_power_status(slot, &hotplug_slot_info->power_status);
        rpaphp_get_pci_adapter_status(slot, 1,
-                                     &slot->hotplug_slot->info->
-                                     adapter_status);
-       if (slot->hotplug_slot->info->adapter_status == NOT_VALID) {
+                                     &hotplug_slot_info->adapter_status);
+       if (hotplug_slot_info->adapter_status == NOT_VALID) {
                err("%s: NOT_VALID: skip dn->full_name=%s\n",
                    __FUNCTION__, slot->dn->full_name);
                return -EINVAL;