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ACPI: simplify acpi_pci_irq_add_prt() API 

A PCI domain cannot change as you descend down subordinate buses, which
makes the 'segment' argument to acpi_pci_irq_add_prt() useless.

Change the interface to take a struct pci_bus *, from whence we can derive
the bus number and segment. Reducing the number of arguments makes life
simpler for callers.

Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexander Chiang 2009-06-10 19:55:35 +00:00 committed by Len Brown
parent 499650de69
commit 859a3f86ca
4 changed files with 11 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/acpi/pci_bind.c
View File

@ -124,7 +124,7 @@ static int acpi_pci_bind(struct acpi_device *device)
{
acpi_status status;
acpi_handle handle;
unsigned char bus;
struct pci_bus *bus;
struct pci_dev *dev;
dev = acpi_get_pci_dev(device->handle);
@ -157,11 +157,11 @@ static int acpi_pci_bind(struct acpi_device *device)
goto out;
if (dev->subordinate)
bus = dev->subordinate->number;
bus = dev->subordinate;
else
bus = dev->bus->number;
bus = dev->bus;
acpi_pci_irq_add_prt(device->handle, pci_domain_nr(dev->bus), bus);
acpi_pci_irq_add_prt(device->handle, bus);
out:
pci_dev_put(dev);

10
drivers/acpi/pci_irq.c
View File

@ -182,7 +182,7 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
}
}
static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
struct acpi_pci_routing_table *prt)
{
struct acpi_prt_entry *entry;
@ -196,8 +196,8 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
* 1=INTA, 2=INTB. We use the PCI encoding throughout, so convert
* it here.
*/
entry->id.segment = segment;
entry->id.bus = bus;
entry->id.segment = pci_domain_nr(bus);
entry->id.bus = bus->number;
entry->id.device = (prt->address >> 16) & 0xFFFF;
entry->pin = prt->pin + 1;
@ -242,7 +242,7 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
return 0;
}
int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@ -271,7 +271,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
entry = buffer.pointer;
while (entry && (entry->length > 0)) {
acpi_pci_irq_add_entry(handle, segment, bus, entry);
acpi_pci_irq_add_entry(handle, bus, entry);
entry = (struct acpi_pci_routing_table *)
((unsigned long)entry + entry->length);
}

3
drivers/acpi/pci_root.c
View File

@ -614,8 +614,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
*/
status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
if (ACPI_SUCCESS(status))
result = acpi_pci_irq_add_prt(device->handle, root->id.segment,
root->id.bus);
result = acpi_pci_irq_add_prt(device->handle, root->bus);
/*
* Scan and bind all _ADR-Based Devices

2
include/acpi/acpi_drivers.h
View File

@ -91,7 +91,7 @@ int acpi_pci_link_free_irq(acpi_handle handle);
/* ACPI PCI Interrupt Routing (pci_irq.c) */
int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus);
int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus);
void acpi_pci_irq_del_prt(int segment, int bus);
/* ACPI PCI Device Binding (pci_bind.c) */