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

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

[Jesper Juhl]

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.

Please review and consider for inclusion.


Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
---

 drivers/pci/hotplug/rpaphp_pci.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

--- linux-2.6.15-rc5-git1-orig/drivers/pci/hotplug/rpaphp_pci.c	2005-12-04 18:48:04.000000000 +0100
+++ linux-2.6.15-rc5-git1/drivers/pci/hotplug/rpaphp_pci.c	2005-12-11 03:59:31.000000000 +0100
@@ -370,13 +370,14 @@ EXPORT_SYMBOL_GPL(rpaphp_unconfig_pci_ad
 
 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;