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authorAlexander Chiang <achiang@hp.com>2009-06-10 19:55:35 +0000
committerLen Brown <len.brown@intel.com>2009-06-17 23:22:16 -0400
commit859a3f86ca83346f4097e956d0b27d96aa7a1cff (patch)
treeba56cc791a0c427ab817a86e57a6338c23bbb3c1
parent499650de6906722184b639989b47227a362b62f8 (diff)
downloadop-kernel-dev-859a3f86ca83346f4097e956d0b27d96aa7a1cff.zip
op-kernel-dev-859a3f86ca83346f4097e956d0b27d96aa7a1cff.tar.gz
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>
-rw-r--r--drivers/acpi/pci_bind.c8
-rw-r--r--drivers/acpi/pci_irq.c10
-rw-r--r--drivers/acpi/pci_root.c3
-rw-r--r--include/acpi/acpi_drivers.h2
4 files changed, 11 insertions, 12 deletions
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 703d2a3..6eb58ef 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -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);
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 51b9f82..3ed944c 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -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);
}
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index f23fcc5..f341b07 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -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
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 2740a28..686a960 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -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) */
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