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Subject[patch 2/3] apci: use stored value of pin from pci_dev
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plain text document attachment (patch-interrupt-pin-acpi)
Use the stored value of the Interrupt Pin, rather than try to read
it again.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>

drivers/acpi/pci_irq.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

Index: linux-2.6.13/drivers/acpi/pci_irq.c
===================================================================
--- linux-2.6.13.orig/drivers/acpi/pci_irq.c
+++ linux-2.6.13/drivers/acpi/pci_irq.c
@@ -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",
@@ -412,7 +411,7 @@ int acpi_pci_irq_enable(struct pci_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",
@@ -503,7 +502,7 @@ void acpi_pci_irq_disable(struct pci_dev
if (!dev || !dev->bus)
return_VOID;

- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin = dev->pin;
if (!pin)
return_VOID;
pin--;
--
-
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