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ACPI: Pass segment/bus to _PRT add/del so they don't depend on pci_bus 

This effectively reverts 859a3f86ca ("ACPI: simplify
acpi_pci_irq_add_prt() API") and d9efae3688 ("ACPI: simplify
acpi_pci_irq_del_prt() API").

The reason is to disentangle these routines from the struct pci_bus.
We want to be able to add the _PRT before the struct pci_bus
exists, and delete the _PRT after we've removed the pci_bus.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This commit is contained in:
Bjorn Helgaas 2012-10-30 15:24:06 +09:00
parent f426cef3bc
commit 79c4412298
4 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/acpi/pci_bind.c
View File

@ -49,7 +49,7 @@ static int acpi_pci_unbind(struct acpi_device *device)
if (!dev->subordinate)
goto out;
acpi_pci_irq_del_prt(dev->subordinate);
acpi_pci_irq_del_prt(pci_domain_nr(dev->bus), dev->subordinate->number);
device->ops.bind = NULL;
device->ops.unbind = NULL;
@ -63,7 +63,7 @@ static int acpi_pci_bind(struct acpi_device *device)
{
acpi_status status;
acpi_handle handle;
struct pci_bus *bus;
unsigned char bus;
struct pci_dev *dev;
dev = acpi_get_pci_dev(device->handle);
@ -100,11 +100,11 @@ static int acpi_pci_bind(struct acpi_device *device)
goto out;
if (dev->subordinate)
bus = dev->subordinate;
bus = dev->subordinate->number;
else
bus = dev->bus;
bus = dev->bus->number;
acpi_pci_irq_add_prt(device->handle, bus);
acpi_pci_irq_add_prt(device->handle, pci_domain_nr(dev->bus), bus);
out:
pci_dev_put(dev);

17
drivers/acpi/pci_irq.c
View File

@ -184,7 +184,7 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
}
}
static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
struct acpi_pci_routing_table *prt)
{
struct acpi_prt_entry *entry;
@ -198,8 +198,8 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
* 1=INTA, 2=INTB. We use the PCI encoding throughout, so convert
* it here.
*/
entry->id.segment = pci_domain_nr(bus);
entry->id.bus = bus->number;
entry->id.segment = segment;
entry->id.bus = bus;
entry->id.device = (prt->address >> 16) & 0xFFFF;
entry->pin = prt->pin + 1;
@ -244,7 +244,7 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
return 0;
}
int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
{
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@ -273,7 +273,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
entry = buffer.pointer;
while (entry && (entry->length > 0)) {
acpi_pci_irq_add_entry(handle, bus, entry);
acpi_pci_irq_add_entry(handle, segment, bus, entry);
entry = (struct acpi_pci_routing_table *)
((unsigned long)entry + entry->length);
}
@ -282,17 +282,16 @@ int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
return 0;
}
void acpi_pci_irq_del_prt(struct pci_bus *bus)
void acpi_pci_irq_del_prt(int segment, int bus)
{
struct acpi_prt_entry *entry, *tmp;
printk(KERN_DEBUG
"ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n",
pci_domain_nr(bus), bus->number);
segment, bus);
spin_lock(&acpi_prt_lock);
list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) {
if (pci_domain_nr(bus) == entry->id.segment
&& bus->number == entry->id.bus) {
if (segment == entry->id.segment && bus == entry->id.bus) {
list_del(&entry->list);
kfree(entry);
}

5
drivers/acpi/pci_root.c
View File

@ -554,7 +554,8 @@ 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->bus);
result = acpi_pci_irq_add_prt(device->handle, root->segment,
root->secondary.start);
/*
* Scan and bind all _ADR-Based Devices
@ -682,7 +683,7 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type)
status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
if (ACPI_SUCCESS(status))
acpi_pci_irq_del_prt(root->bus);
acpi_pci_irq_del_prt(root->segment, root->secondary.start);
pci_remove_root_bus(root->bus);

4
include/acpi/acpi_drivers.h
View File

@ -92,8 +92,8 @@ 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, struct pci_bus *bus);
void acpi_pci_irq_del_prt(struct pci_bus *bus);
int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus);
void acpi_pci_irq_del_prt(int segment, int bus);
/* ACPI PCI Device Binding (pci_bind.c) */