diff options
Diffstat (limited to 'drivers/acpi/pci_irq.c')
| -rw-r--r-- | drivers/acpi/pci_irq.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 28338227dd5..e42481f6449 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -384,16 +384,15 @@ acpi_pci_irq_lookup(struct pci_dev *dev, int pin) struct acpi_prt_entry *entry; entry = acpi_pci_irq_find_prt_entry(dev, pin); - if (!entry) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No %s[%c] _PRT entry\n", + if (entry) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %s[%c] _PRT entry\n", pci_name(dev), pin_name(pin))); - return NULL; + return entry; } - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %s[%c] _PRT entry\n", + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No %s[%c] _PRT entry\n", pci_name(dev), pin_name(pin))); - - return entry; + return NULL; } static struct acpi_prt_entry * @@ -408,7 +407,7 @@ acpi_pci_irq_derive(struct pci_dev *dev, int pin) * Attempt to derive an IRQ for this device from a parent bridge's * PCI interrupt routing entry (eg. yenta bridge and add-in card bridge). */ - while (!entry && bridge->bus->self) { + while (bridge->bus->self) { pin = (((pin - 1) + PCI_SLOT(bridge->devfn)) % 4) + 1; bridge = bridge->bus->self; @@ -425,18 +424,18 @@ acpi_pci_irq_derive(struct pci_dev *dev, int pin) } entry = acpi_pci_irq_lookup(bridge, pin); + if (entry) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Derived GSI for %s INT %c from %s\n", + pci_name(dev), pin_name(orig_pin), + pci_name(bridge))); + return entry; + } } - if (!entry) { - dev_warn(&dev->dev, "can't derive routing for PCI INT %c\n", - pin_name(orig_pin)); - return NULL; - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Derived GSI for %s INT %c from %s\n", - pci_name(dev), pin_name(orig_pin), pci_name(bridge))); - - return entry; + dev_warn(&dev->dev, "can't derive routing for PCI INT %c\n", + pin_name(orig_pin)); + return NULL; } /* |