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path: root/drivers/acpi/pci_irq.c
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Diffstat (limited to 'drivers/acpi/pci_irq.c')
-rw-r--r--drivers/acpi/pci_irq.c55
1 files changed, 27 insertions, 28 deletions
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 09567c2edcfb..65aee79b3971 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -258,7 +258,7 @@ typedef int (*irq_lookup_func) (struct acpi_prt_entry *, int *, int *, char **);
static int
acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
- int *edge_level, int *active_high_low, char **link)
+ int *triggering, int *polarity, char **link)
{
int irq;
@@ -266,8 +266,8 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
if (entry->link.handle) {
irq = acpi_pci_link_allocate_irq(entry->link.handle,
- entry->link.index, edge_level,
- active_high_low, link);
+ entry->link.index, triggering,
+ polarity, link);
if (irq < 0) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"Invalid IRQ link routing entry\n"));
@@ -275,8 +275,8 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
}
} else {
irq = entry->link.index;
- *edge_level = ACPI_LEVEL_SENSITIVE;
- *active_high_low = ACPI_ACTIVE_LOW;
+ *triggering = ACPI_LEVEL_SENSITIVE;
+ *polarity = ACPI_ACTIVE_LOW;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq));
@@ -285,7 +285,7 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
static int
acpi_pci_free_irq(struct acpi_prt_entry *entry,
- int *edge_level, int *active_high_low, char **link)
+ int *triggering, int *polarity, char **link)
{
int irq;
@@ -307,8 +307,8 @@ static int
acpi_pci_irq_lookup(struct pci_bus *bus,
int device,
int pin,
- int *edge_level,
- int *active_high_low, char **link, irq_lookup_func func)
+ int *triggering,
+ int *polarity, char **link, irq_lookup_func func)
{
struct acpi_prt_entry *entry = NULL;
int segment = pci_domain_nr(bus);
@@ -327,7 +327,7 @@ acpi_pci_irq_lookup(struct pci_bus *bus,
return_VALUE(-1);
}
- ret = func(entry, edge_level, active_high_low, link);
+ ret = func(entry, triggering, polarity, link);
return_VALUE(ret);
}
@@ -339,8 +339,8 @@ acpi_pci_irq_lookup(struct pci_bus *bus,
static int
acpi_pci_irq_derive(struct pci_dev *dev,
int pin,
- int *edge_level,
- int *active_high_low, char **link, irq_lookup_func func)
+ int *triggering,
+ int *polarity, char **link, irq_lookup_func func)
{
struct pci_dev *bridge = dev;
int irq = -1;
@@ -361,8 +361,7 @@ acpi_pci_irq_derive(struct pci_dev *dev,
if ((bridge->class >> 8) == PCI_CLASS_BRIDGE_CARDBUS) {
/* PC card has the same IRQ as its cardbridge */
- pci_read_config_byte(bridge, PCI_INTERRUPT_PIN,
- &bridge_pin);
+ bridge_pin = bridge->pin;
if (!bridge_pin) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No interrupt pin configured for device %s\n",
@@ -375,7 +374,7 @@ acpi_pci_irq_derive(struct pci_dev *dev,
}
irq = acpi_pci_irq_lookup(bridge->bus, PCI_SLOT(bridge->devfn),
- pin, edge_level, active_high_low,
+ pin, triggering, polarity,
link, func);
}
@@ -402,8 +401,8 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
{
int irq = 0;
u8 pin = 0;
- int edge_level = ACPI_LEVEL_SENSITIVE;
- int active_high_low = ACPI_ACTIVE_LOW;
+ int triggering = ACPI_LEVEL_SENSITIVE;
+ int polarity = ACPI_ACTIVE_LOW;
char *link = NULL;
int rc;
@@ -412,7 +411,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
if (!dev)
return_VALUE(-EINVAL);
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin = dev->pin;
if (!pin) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No interrupt pin configured for device %s\n",
@@ -432,7 +431,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
* values override any BIOS-assigned IRQs set during boot.
*/
irq = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin,
- &edge_level, &active_high_low, &link,
+ &triggering, &polarity, &link,
acpi_pci_allocate_irq);
/*
@@ -440,8 +439,8 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
* device's parent bridge.
*/
if (irq < 0)
- irq = acpi_pci_irq_derive(dev, pin, &edge_level,
- &active_high_low, &link,
+ irq = acpi_pci_irq_derive(dev, pin, &triggering,
+ &polarity, &link,
acpi_pci_allocate_irq);
/*
@@ -463,7 +462,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
}
}
- rc = acpi_register_gsi(irq, edge_level, active_high_low);
+ rc = acpi_register_gsi(irq, triggering, polarity);
if (rc < 0) {
printk(KERN_WARNING PREFIX "PCI Interrupt %s[%c]: failed "
"to register GSI\n", pci_name(dev), ('A' + pin));
@@ -478,8 +477,8 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
printk("Link [%s] -> ", link);
printk("GSI %u (%s, %s) -> IRQ %d\n", irq,
- (edge_level == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
- (active_high_low == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
+ (triggering == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
+ (polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
return_VALUE(0);
}
@@ -495,15 +494,15 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
{
int gsi = 0;
u8 pin = 0;
- int edge_level = ACPI_LEVEL_SENSITIVE;
- int active_high_low = ACPI_ACTIVE_LOW;
+ int triggering = ACPI_LEVEL_SENSITIVE;
+ int polarity = ACPI_ACTIVE_LOW;
ACPI_FUNCTION_TRACE("acpi_pci_irq_disable");
if (!dev || !dev->bus)
return_VOID;
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin = dev->pin;
if (!pin)
return_VOID;
pin--;
@@ -512,7 +511,7 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
* First we check the PCI IRQ routing table (PRT) for an IRQ.
*/
gsi = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin,
- &edge_level, &active_high_low, NULL,
+ &triggering, &polarity, NULL,
acpi_pci_free_irq);
/*
* If no PRT entry was found, we'll try to derive an IRQ from the
@@ -520,7 +519,7 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
*/
if (gsi < 0)
gsi = acpi_pci_irq_derive(dev, pin,
- &edge_level, &active_high_low, NULL,
+ &triggering, &polarity, NULL,
acpi_pci_free_irq);
if (gsi < 0)
return_VOID;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 13:28:06 +0000