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 <[email protected]>
---
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;
-
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