PCI Hotplug: cpqphp: clean up accesses to pcibios_get_irq_routing_table()
Instead of making multiple calls to pcibios_get_irq_routing_table, let's
just do it once and save the answer.
The reason we were making multiple calls is because we liked to calculate
its length and perform some loop over it. Instead of open-coding the length
calculation every time, provide it in an inline helper function.
Finally, since pci_print_IRQ_route() is used only for debug, let's only
do it when cpqhp_debug is set.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c
index 2909e3f..6201281 100644
--- a/drivers/pci/hotplug/cpqphp_pci.c
+++ b/drivers/pci/hotplug/cpqphp_pci.c
@@ -37,7 +37,6 @@
#include "../pci.h"
#include "cpqphp.h"
#include "cpqphp_nvram.h"
-#include <asm/pci_x86.h>
u8 cpqhp_nic_irq;
@@ -244,39 +243,23 @@
static int PCI_GetBusDevHelper(struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot, u8 nobridge)
{
- struct irq_routing_table *PCIIRQRoutingInfoLength;
- long len;
- long loop;
+ int loop, len;
u32 work;
-
u8 tbus, tdevice, tslot;
- PCIIRQRoutingInfoLength = pcibios_get_irq_routing_table();
- if (!PCIIRQRoutingInfoLength)
- return -1;
-
- len = (PCIIRQRoutingInfoLength->size -
- sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
- /* Make sure I got at least one entry */
- if (len == 0) {
- kfree(PCIIRQRoutingInfoLength );
- return -1;
- }
-
+ len = cpqhp_routing_table_length();
for (loop = 0; loop < len; ++loop) {
- tbus = PCIIRQRoutingInfoLength->slots[loop].bus;
- tdevice = PCIIRQRoutingInfoLength->slots[loop].devfn;
- tslot = PCIIRQRoutingInfoLength->slots[loop].slot;
+ tbus = cpqhp_routing_table->slots[loop].bus;
+ tdevice = cpqhp_routing_table->slots[loop].devfn;
+ tslot = cpqhp_routing_table->slots[loop].slot;
if (tslot == slot) {
*bus_num = tbus;
*dev_num = tdevice;
ctrl->pci_bus->number = tbus;
pci_bus_read_config_dword (ctrl->pci_bus, *dev_num, PCI_VENDOR_ID, &work);
- if (!nobridge || (work == 0xffffffff)) {
- kfree(PCIIRQRoutingInfoLength );
+ if (!nobridge || (work == 0xffffffff))
return 0;
- }
dbg("bus_num %d devfn %d\n", *bus_num, *dev_num);
pci_bus_read_config_dword (ctrl->pci_bus, *dev_num, PCI_CLASS_REVISION, &work);
@@ -287,17 +270,12 @@
dbg("Scan bus for Non Bridge: bus %d\n", tbus);
if (PCI_ScanBusForNonBridge(ctrl, tbus, dev_num) == 0) {
*bus_num = tbus;
- kfree(PCIIRQRoutingInfoLength );
return 0;
}
- } else {
- kfree(PCIIRQRoutingInfoLength );
+ } else
return 0;
- }
-
}
}
- kfree(PCIIRQRoutingInfoLength );
return -1;
}