#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define _COMPONENT ACPI_PCI_COMPONENT
-ACPI_MODULE_NAME("pci_link")
+#define PREFIX "ACPI: "
+
+#define _COMPONENT ACPI_PCI_COMPONENT
+ACPI_MODULE_NAME("pci_link");
#define ACPI_PCI_LINK_CLASS "pci_irq_routing"
-#define ACPI_PCI_LINK_HID "PNP0C0F"
-#define ACPI_PCI_LINK_DRIVER_NAME "ACPI PCI Interrupt Link Driver"
#define ACPI_PCI_LINK_DEVICE_NAME "PCI Interrupt Link"
#define ACPI_PCI_LINK_FILE_INFO "info"
#define ACPI_PCI_LINK_FILE_STATUS "state"
-#define ACPI_PCI_LINK_MAX_POSSIBLE 16
+#define ACPI_PCI_LINK_MAX_POSSIBLE 16
+
static int acpi_pci_link_add(struct acpi_device *device);
static int acpi_pci_link_remove(struct acpi_device *device, int type);
+static struct acpi_device_id link_device_ids[] = {
+ {"PNP0C0F", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, link_device_ids);
+
static struct acpi_driver acpi_pci_link_driver = {
- .name = ACPI_PCI_LINK_DRIVER_NAME,
+ .name = "pci_link",
.class = ACPI_PCI_LINK_CLASS,
- .ids = ACPI_PCI_LINK_HID,
+ .ids = link_device_ids,
.ops = {
.add = acpi_pci_link_add,
.remove = acpi_pci_link_remove,
- },
+ },
};
/*
struct acpi_pci_link_irq {
u8 active; /* Current IRQ */
u8 triggering; /* All IRQs */
- u8 polarity; /* All IRQs */
+ u8 polarity; /* All IRQs */
u8 resource_type;
u8 possible_count;
u8 possible[ACPI_PCI_LINK_MAX_POSSIBLE];
};
struct acpi_pci_link {
- struct list_head node;
- struct acpi_device *device;
- acpi_handle handle;
- struct acpi_pci_link_irq irq;
- int refcnt;
+ struct list_head list;
+ struct acpi_device *device;
+ struct acpi_pci_link_irq irq;
+ int refcnt;
};
-static struct {
- int count;
- struct list_head entries;
-} acpi_link;
-DEFINE_MUTEX(acpi_link_lock);
+static LIST_HEAD(acpi_link_list);
+static DEFINE_MUTEX(acpi_link_lock);
/* --------------------------------------------------------------------------
PCI Link Device Management
/*
* set context (link) possible list from resource list
*/
-static acpi_status
-acpi_pci_link_check_possible(struct acpi_resource *resource, void *context)
+static acpi_status acpi_pci_link_check_possible(struct acpi_resource *resource,
+ void *context)
{
- struct acpi_pci_link *link = (struct acpi_pci_link *)context;
- u32 i = 0;
-
- ACPI_FUNCTION_TRACE("acpi_pci_link_check_possible");
+ struct acpi_pci_link *link = context;
+ u32 i;
switch (resource->type) {
case ACPI_RESOURCE_TYPE_START_DEPENDENT:
- return_ACPI_STATUS(AE_OK);
+ case ACPI_RESOURCE_TYPE_END_TAG:
+ return AE_OK;
case ACPI_RESOURCE_TYPE_IRQ:
{
struct acpi_resource_irq *p = &resource->data.irq;
if (!p || !p->interrupt_count) {
- printk(KERN_WARNING PREFIX "Blank IRQ resource\n");
- return_ACPI_STATUS(AE_OK);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Blank _PRS IRQ resource\n"));
+ return AE_OK;
}
for (i = 0;
(i < p->interrupt_count
&& i < ACPI_PCI_LINK_MAX_POSSIBLE); i++) {
if (!p->interrupts[i]) {
- printk(KERN_WARNING PREFIX "Invalid IRQ %d\n",
- p->interrupts[i]);
+ printk(KERN_WARNING PREFIX
+ "Invalid _PRS IRQ %d\n",
+ p->interrupts[i]);
continue;
}
link->irq.possible[i] = p->interrupts[i];
&resource->data.extended_irq;
if (!p || !p->interrupt_count) {
printk(KERN_WARNING PREFIX
- "Blank EXT IRQ resource\n");
- return_ACPI_STATUS(AE_OK);
+ "Blank _PRS EXT IRQ resource\n");
+ return AE_OK;
}
for (i = 0;
(i < p->interrupt_count
&& i < ACPI_PCI_LINK_MAX_POSSIBLE); i++) {
if (!p->interrupts[i]) {
- printk(KERN_WARNING PREFIX "Invalid IRQ %d\n",
- p->interrupts[i]);
+ printk(KERN_WARNING PREFIX
+ "Invalid _PRS IRQ %d\n",
+ p->interrupts[i]);
continue;
}
link->irq.possible[i] = p->interrupts[i];
break;
}
default:
- ACPI_ERROR((AE_INFO, "Resource is not an IRQ entry\n"));
- return_ACPI_STATUS(AE_OK);
+ printk(KERN_ERR PREFIX "_PRS resource type 0x%x isn't an IRQ\n",
+ resource->type);
+ return AE_OK;
}
- return_ACPI_STATUS(AE_CTRL_TERMINATE);
+ return AE_CTRL_TERMINATE;
}
static int acpi_pci_link_get_possible(struct acpi_pci_link *link)
{
acpi_status status;
- ACPI_FUNCTION_TRACE("acpi_pci_link_get_possible");
-
- if (!link)
- return_VALUE(-EINVAL);
-
- status = acpi_walk_resources(link->handle, METHOD_NAME__PRS,
+ status = acpi_walk_resources(link->device->handle, METHOD_NAME__PRS,
acpi_pci_link_check_possible, link);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRS"));
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found %d possible IRQs\n",
link->irq.possible_count));
- return_VALUE(0);
+ return 0;
}
-static acpi_status
-acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
+static acpi_status acpi_pci_link_check_current(struct acpi_resource *resource,
+ void *context)
{
- int *irq = (int *)context;
-
- ACPI_FUNCTION_TRACE("acpi_pci_link_check_current");
+ int *irq = context;
switch (resource->type) {
+ case ACPI_RESOURCE_TYPE_START_DEPENDENT:
+ case ACPI_RESOURCE_TYPE_END_TAG:
+ return AE_OK;
case ACPI_RESOURCE_TYPE_IRQ:
{
struct acpi_resource_irq *p = &resource->data.irq;
* particularly those those w/ _STA disabled
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Blank IRQ resource\n"));
- return_ACPI_STATUS(AE_OK);
+ "Blank _CRS IRQ resource\n"));
+ return AE_OK;
}
*irq = p->interrupts[0];
break;
* return at least 1 IRQ
*/
printk(KERN_WARNING PREFIX
- "Blank EXT IRQ resource\n");
- return_ACPI_STATUS(AE_OK);
+ "Blank _CRS EXT IRQ resource\n");
+ return AE_OK;
}
*irq = p->interrupts[0];
break;
}
break;
default:
- ACPI_ERROR((AE_INFO, "Resource %d isn't an IRQ", resource->type));
- case ACPI_RESOURCE_TYPE_END_TAG:
- return_ACPI_STATUS(AE_OK);
+ printk(KERN_ERR PREFIX "_CRS resource type 0x%x isn't an IRQ\n",
+ resource->type);
+ return AE_OK;
}
- return_ACPI_STATUS(AE_CTRL_TERMINATE);
+
+ return AE_CTRL_TERMINATE;
}
/*
static int acpi_pci_link_get_current(struct acpi_pci_link *link)
{
int result = 0;
- acpi_status status = AE_OK;
+ acpi_status status;
int irq = 0;
- ACPI_FUNCTION_TRACE("acpi_pci_link_get_current");
-
- if (!link || !link->handle)
- return_VALUE(-EINVAL);
-
link->irq.active = 0;
/* in practice, status disabled is meaningless, ignore it */
/* Query _STA, set link->device->status */
result = acpi_bus_get_status(link->device);
if (result) {
- ACPI_ERROR((AE_INFO, "Unable to read status"));
+ printk(KERN_ERR PREFIX "Unable to read status\n");
goto end;
}
if (!link->device->status.enabled) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link disabled\n"));
- return_VALUE(0);
+ return 0;
}
}
* Query and parse _CRS to get the current IRQ assignment.
*/
- status = acpi_walk_resources(link->handle, METHOD_NAME__CRS,
+ status = acpi_walk_resources(link->device->handle, METHOD_NAME__CRS,
acpi_pci_link_check_current, &irq);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _CRS"));
}
if (acpi_strict && !irq) {
- ACPI_ERROR((AE_INFO, "_CRS returned 0"));
+ printk(KERN_ERR PREFIX "_CRS returned 0\n");
result = -ENODEV;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link at IRQ %d \n", link->irq.active));
end:
- return_VALUE(result);
+ return result;
}
static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
{
- int result = 0;
- acpi_status status = AE_OK;
+ int result;
+ acpi_status status;
struct {
struct acpi_resource res;
struct acpi_resource end;
} *resource;
struct acpi_buffer buffer = { 0, NULL };
- ACPI_FUNCTION_TRACE("acpi_pci_link_set");
+ if (!irq)
+ return -EINVAL;
- if (!link || !irq)
- return_VALUE(-EINVAL);
-
- resource = kmalloc(sizeof(*resource) + 1, GFP_ATOMIC);
+ resource = kzalloc(sizeof(*resource) + 1, irqs_disabled() ? GFP_ATOMIC: GFP_KERNEL);
if (!resource)
- return_VALUE(-ENOMEM);
+ return -ENOMEM;
- memset(resource, 0, sizeof(*resource) + 1);
buffer.length = sizeof(*resource) + 1;
buffer.pointer = resource;
/* ignore resource_source, it's optional */
break;
default:
- ACPI_ERROR((AE_INFO, "Invalid Resource_type %d\n", link->irq.resource_type));
+ printk(KERN_ERR PREFIX "Invalid Resource_type %d\n", link->irq.resource_type);
result = -EINVAL;
goto end;
resource->end.type = ACPI_RESOURCE_TYPE_END_TAG;
/* Attempt to set the resource */
- status = acpi_set_current_resources(link->handle, &buffer);
+ status = acpi_set_current_resources(link->device->handle, &buffer);
/* check for total failure */
if (ACPI_FAILURE(status)) {
/* Query _STA, set device->status */
result = acpi_bus_get_status(link->device);
if (result) {
- ACPI_ERROR((AE_INFO, "Unable to read status"));
+ printk(KERN_ERR PREFIX "Unable to read status\n");
goto end;
}
if (!link->device->status.enabled) {
end:
kfree(resource);
- return_VALUE(result);
+ return result;
}
/* --------------------------------------------------------------------------
PIRQ_PENALTY_PCI_AVAILABLE, /* IRQ9 PCI, often acpi */
PIRQ_PENALTY_PCI_AVAILABLE, /* IRQ10 PCI */
PIRQ_PENALTY_PCI_AVAILABLE, /* IRQ11 PCI */
- PIRQ_PENALTY_ISA_USED, /* IRQ12 mouse */
- PIRQ_PENALTY_ISA_USED, /* IRQ13 fpe, sometimes */
- PIRQ_PENALTY_ISA_USED, /* IRQ14 ide0 */
- PIRQ_PENALTY_ISA_USED, /* IRQ15 ide1 */
+ PIRQ_PENALTY_ISA_USED, /* IRQ12 mouse */
+ PIRQ_PENALTY_ISA_USED, /* IRQ13 fpe, sometimes */
+ PIRQ_PENALTY_ISA_USED, /* IRQ14 ide0 */
+ PIRQ_PENALTY_ISA_USED, /* IRQ15 ide1 */
/* >IRQ15 */
};
int __init acpi_irq_penalty_init(void)
{
- struct list_head *node = NULL;
- struct acpi_pci_link *link = NULL;
- int i = 0;
-
- ACPI_FUNCTION_TRACE("acpi_irq_penalty_init");
+ struct acpi_pci_link *link;
+ int i;
/*
* Update penalties to facilitate IRQ balancing.
*/
- list_for_each(node, &acpi_link.entries) {
-
- link = list_entry(node, struct acpi_pci_link, node);
- if (!link) {
- ACPI_ERROR((AE_INFO, "Invalid link context"));
- continue;
- }
+ list_for_each_entry(link, &acpi_link_list, list) {
/*
* reflect the possible and active irqs in the penalty table --
}
}
/* Add a penalty for the SCI */
- acpi_irq_penalty[acpi_fadt.sci_int] += PIRQ_PENALTY_PCI_USING;
-
- return_VALUE(0);
+ acpi_irq_penalty[acpi_gbl_FADT.sci_interrupt] += PIRQ_PENALTY_PCI_USING;
+ return 0;
}
-static int acpi_irq_balance; /* 0: static, 1: balance */
+static int acpi_irq_balance = -1; /* 0: static, 1: balance */
static int acpi_pci_link_allocate(struct acpi_pci_link *link)
{
int irq;
int i;
- ACPI_FUNCTION_TRACE("acpi_pci_link_allocate");
-
if (link->irq.initialized) {
if (link->refcnt == 0)
/* This means the link is disabled but initialized */
acpi_pci_link_set(link, link->irq.active);
- return_VALUE(0);
+ return 0;
}
/*
/*
* if active found, use it; else pick entry from end of possible list.
*/
- if (link->irq.active) {
+ if (link->irq.active)
irq = link->irq.active;
- } else {
+ else
irq = link->irq.possible[link->irq.possible_count - 1];
- }
if (acpi_irq_balance || !link->irq.active) {
/*
/* Attempt to enable the link device at this IRQ. */
if (acpi_pci_link_set(link, irq)) {
- ACPI_ERROR((AE_INFO, "Unable to set IRQ for %s [%s]. "
- "Try pci=noacpi or acpi=off",
+ printk(KERN_ERR PREFIX "Unable to set IRQ for %s [%s]. "
+ "Try pci=noacpi or acpi=off\n",
acpi_device_name(link->device),
- acpi_device_bid(link->device)));
- return_VALUE(-ENODEV);
+ acpi_device_bid(link->device));
+ return -ENODEV;
} else {
acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
- printk(PREFIX "%s [%s] enabled at IRQ %d\n",
+ printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
acpi_device_name(link->device),
acpi_device_bid(link->device), link->irq.active);
}
link->irq.initialized = 1;
-
- return_VALUE(0);
+ return 0;
}
/*
* success: return IRQ >= 0
* failure: return -1
*/
-
-int
-acpi_pci_link_allocate_irq(acpi_handle handle,
- int index,
- int *triggering, int *polarity, char **name)
+int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
+ int *polarity, char **name)
{
- int result = 0;
- struct acpi_device *device = NULL;
- struct acpi_pci_link *link = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_pci_link_allocate_irq");
+ int result;
+ struct acpi_device *device;
+ struct acpi_pci_link *link;
result = acpi_bus_get_device(handle, &device);
if (result) {
- ACPI_ERROR((AE_INFO, "Invalid link device"));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Invalid link device\n");
+ return -1;
}
- link = (struct acpi_pci_link *)acpi_driver_data(device);
+ link = acpi_driver_data(device);
if (!link) {
- ACPI_ERROR((AE_INFO, "Invalid link context"));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Invalid link context\n");
+ return -1;
}
/* TBD: Support multiple index (IRQ) entries per Link Device */
if (index) {
- ACPI_ERROR((AE_INFO, "Invalid index %d", index));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Invalid index %d\n", index);
+ return -1;
}
mutex_lock(&acpi_link_lock);
if (acpi_pci_link_allocate(link)) {
mutex_unlock(&acpi_link_lock);
- return_VALUE(-1);
+ return -1;
}
if (!link->irq.active) {
mutex_unlock(&acpi_link_lock);
- ACPI_ERROR((AE_INFO, "Link active IRQ is 0!"));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Link active IRQ is 0!\n");
+ return -1;
}
link->refcnt++;
mutex_unlock(&acpi_link_lock);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Link %s is referenced\n",
acpi_device_bid(link->device)));
- return_VALUE(link->irq.active);
+ return (link->irq.active);
}
/*
*/
int acpi_pci_link_free_irq(acpi_handle handle)
{
- struct acpi_device *device = NULL;
- struct acpi_pci_link *link = NULL;
+ struct acpi_device *device;
+ struct acpi_pci_link *link;
acpi_status result;
- ACPI_FUNCTION_TRACE("acpi_pci_link_free_irq");
-
result = acpi_bus_get_device(handle, &device);
if (result) {
- ACPI_ERROR((AE_INFO, "Invalid link device"));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Invalid link device\n");
+ return -1;
}
- link = (struct acpi_pci_link *)acpi_driver_data(device);
+ link = acpi_driver_data(device);
if (!link) {
- ACPI_ERROR((AE_INFO, "Invalid link context"));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Invalid link context\n");
+ return -1;
}
mutex_lock(&acpi_link_lock);
if (!link->irq.initialized) {
mutex_unlock(&acpi_link_lock);
- ACPI_ERROR((AE_INFO, "Link isn't initialized"));
- return_VALUE(-1);
+ printk(KERN_ERR PREFIX "Link isn't initialized\n");
+ return -1;
}
#ifdef FUTURE_USE
/*
"Link %s is dereferenced\n",
acpi_device_bid(link->device)));
- if (link->refcnt == 0) {
- acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL);
- }
+ if (link->refcnt == 0)
+ acpi_evaluate_object(link->device->handle, "_DIS", NULL, NULL);
+
mutex_unlock(&acpi_link_lock);
- return_VALUE(link->irq.active);
+ return (link->irq.active);
}
/* --------------------------------------------------------------------------
static int acpi_pci_link_add(struct acpi_device *device)
{
- int result = 0;
- struct acpi_pci_link *link = NULL;
- int i = 0;
+ int result;
+ struct acpi_pci_link *link;
+ int i;
int found = 0;
- ACPI_FUNCTION_TRACE("acpi_pci_link_add");
-
- if (!device)
- return_VALUE(-EINVAL);
-
- link = kmalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
+ link = kzalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
if (!link)
- return_VALUE(-ENOMEM);
- memset(link, 0, sizeof(struct acpi_pci_link));
+ return -ENOMEM;
link->device = device;
- link->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PCI_LINK_CLASS);
- acpi_driver_data(device) = link;
+ device->driver_data = link;
mutex_lock(&acpi_link_lock);
result = acpi_pci_link_get_possible(link);
/* query and set link->irq.active */
acpi_pci_link_get_current(link);
- printk(PREFIX "%s [%s] (IRQs", acpi_device_name(device),
+ printk(KERN_INFO PREFIX "%s [%s] (IRQs", acpi_device_name(device),
acpi_device_bid(device));
for (i = 0; i < link->irq.possible_count; i++) {
if (link->irq.active == link->irq.possible[i]) {
printk("\n");
- /* TBD: Acquire/release lock */
- list_add_tail(&link->node, &acpi_link.entries);
- acpi_link.count++;
+ list_add_tail(&link->list, &acpi_link_list);
end:
/* disable all links -- to be activated on use */
- acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL);
+ acpi_evaluate_object(device->handle, "_DIS", NULL, NULL);
mutex_unlock(&acpi_link_lock);
if (result)
kfree(link);
- return_VALUE(result);
+ return result;
}
static int acpi_pci_link_resume(struct acpi_pci_link *link)
{
- ACPI_FUNCTION_TRACE("acpi_pci_link_resume");
-
if (link->refcnt && link->irq.active && link->irq.initialized)
- return_VALUE(acpi_pci_link_set(link, link->irq.active));
- else
- return_VALUE(0);
+ return (acpi_pci_link_set(link, link->irq.active));
+
+ return 0;
}
-/*
- * FIXME: this is a workaround to avoid nasty warning. It will be removed
- * after every device calls pci_disable_device in .resume.
- */
-int acpi_in_resume;
static int irqrouter_resume(struct sys_device *dev)
{
- struct list_head *node = NULL;
- struct acpi_pci_link *link = NULL;
-
- ACPI_FUNCTION_TRACE("irqrouter_resume");
+ struct acpi_pci_link *link;
- /* Make sure SCI is enabled again (Apple firmware bug?) */
- acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK);
-
- acpi_in_resume = 1;
- list_for_each(node, &acpi_link.entries) {
- link = list_entry(node, struct acpi_pci_link, node);
- if (!link) {
- ACPI_ERROR((AE_INFO, "Invalid link context"));
- continue;
- }
+ list_for_each_entry(link, &acpi_link_list, list) {
acpi_pci_link_resume(link);
}
- acpi_in_resume = 0;
- return_VALUE(0);
+ return 0;
}
static int acpi_pci_link_remove(struct acpi_device *device, int type)
{
- struct acpi_pci_link *link = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_pci_link_remove");
+ struct acpi_pci_link *link;
- if (!device || !acpi_driver_data(device))
- return_VALUE(-EINVAL);
-
- link = (struct acpi_pci_link *)acpi_driver_data(device);
+ link = acpi_driver_data(device);
mutex_lock(&acpi_link_lock);
- list_del(&link->node);
+ list_del(&link->list);
mutex_unlock(&acpi_link_lock);
kfree(link);
-
- return_VALUE(0);
+ return 0;
}
/*
if (irq < 0)
continue;
- if (irq >= ACPI_MAX_IRQS)
+ if (irq >= ARRAY_SIZE(acpi_irq_penalty))
continue;
if (used)
*/
void acpi_penalize_isa_irq(int irq, int active)
{
- if (active)
- acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
- else
- acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
+ if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) {
+ if (active)
+ acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
+ else
+ acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
+ }
}
/*
__setup("acpi_irq_nobalance", acpi_irq_nobalance_set);
-int __init acpi_irq_balance_set(char *str)
+static int __init acpi_irq_balance_set(char *str)
{
acpi_irq_balance = 1;
return 1;
/* FIXME: we will remove this interface after all drivers call pci_disable_device */
static struct sysdev_class irqrouter_sysdev_class = {
- set_kset_name("irqrouter"),
+ .name = "irqrouter",
.resume = irqrouter_resume,
};
{
int error;
- ACPI_FUNCTION_TRACE("irqrouter_init_sysfs");
-
if (acpi_disabled || acpi_noirq)
- return_VALUE(0);
+ return 0;
error = sysdev_class_register(&irqrouter_sysdev_class);
if (!error)
error = sysdev_register(&device_irqrouter);
- return_VALUE(error);
+ return error;
}
device_initcall(irqrouter_init_sysfs);
static int __init acpi_pci_link_init(void)
{
- ACPI_FUNCTION_TRACE("acpi_pci_link_init");
-
if (acpi_noirq)
- return_VALUE(0);
+ return 0;
- acpi_link.count = 0;
- INIT_LIST_HEAD(&acpi_link.entries);
+ if (acpi_irq_balance == -1) {
+ /* no command line switch: enable balancing in IOAPIC mode */
+ if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
+ acpi_irq_balance = 1;
+ else
+ acpi_irq_balance = 0;
+ }
if (acpi_bus_register_driver(&acpi_pci_link_driver) < 0)
- return_VALUE(-ENODEV);
+ return -ENODEV;
- return_VALUE(0);
+ return 0;
}
subsys_initcall(acpi_pci_link_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff