Oct 23 2008

PCI hotplug: fix logic in Compaq hotplug controller bus speed setup 

Author: Julia Lawall <julia@diku.dk>

The pattern !E && !E->fld is nonsensical.  The patch below updates this
according to the assumption that && should be ||.  But perhaps another
solution was intended.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// 
@disable and_comm@
expression E;
identifier fld;
@@

- !E && !E->fld
+ !E || !E->fld
// 

Signed-off-by: Julia Lawall 
Reviewed-by: Matthew Wilcox 
Signed-off-by: Andrew Morton 
Signed-off-by: Jesse Barnes 

---
 drivers/pci/hotplug/cpqphp_ctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index ef041ca..a60a252 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -1139,7 +1139,7 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_
 	for(slot = ctrl->slot; slot; slot = slot->next) {
 		if (slot->device == (hp_slot + ctrl->slot_device_offset)) 
 			continue;
-		if (!slot->hotplug_slot && !slot->hotplug_slot->info) 
+		if (!slot->hotplug_slot || !slot->hotplug_slot->info)
 			continue;
 		if (slot->hotplug_slot->info->adapter_status == 0) 
 			continue;

qlambert