On Wednesday, February 19, 2014 11:35:22 AM Tomasz Nowicki wrote:
> This commit moves ISA-specific code to separate function and makes that
> function depend on CONFIG_{E}ISA so that we do not have to maintain
> acpi_isa_irq_to_gsi() function for architectures which do not support ISA.
>
> Signed-off-by: Tomasz Nowicki <tomasz.nowi...@linaro.org>
> ---
> drivers/acpi/pci_irq.c | 35 +++++++++++++++++++++++++----------
> 1 file changed, 25 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
> index 361b40c..0a553a0 100644
> --- a/drivers/acpi/pci_irq.c
> +++ b/drivers/acpi/pci_irq.c
> @@ -370,6 +370,30 @@ static struct acpi_prt_entry *acpi_pci_irq_lookup(struct
> pci_dev *dev, int pin)
> return NULL;
> }
>
> +#if IS_ENABLED(CONFIG_ISA) || IS_ENABLED(CONFIG_EISA)
> +static int acpi_isa_register_gsi(struct pci_dev *dev)
> +{
> + u32 dev_gsi;
> +
> + /* Interrupt Line values above 0xF are forbidden */
> + if (dev->irq > 0 && (dev->irq <= 0xF) &&
> + (acpi_isa_irq_to_gsi(dev->irq, &dev_gsi) == 0)) {
> + dev_warn(&dev->dev, "PCI INT %c: no GSI - using ISA IRQ %d\n",
> + pin_name(dev->pin), dev->irq);
> + acpi_register_gsi(&dev->dev, dev_gsi,
> + ACPI_LEVEL_SENSITIVE,
> + ACPI_ACTIVE_LOW);
> + return 0;
> + }
> + return -EINVAL;
> +}
> +#else
> +static inline int acpi_isa_register_gsi(struct pci_dev *dev)
> +{
> + return -ENODEV;
> +}
> +#endif
> +
> int acpi_pci_irq_enable(struct pci_dev *dev)
> {
> struct acpi_prt_entry *entry;
> @@ -416,16 +440,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
> * driver reported one, then use it. Exit in any case.
> */
> if (gsi < 0) {
> - u32 dev_gsi;
> - /* Interrupt Line values above 0xF are forbidden */
> - if (dev->irq > 0 && (dev->irq <= 0xF) &&
> - (acpi_isa_irq_to_gsi(dev->irq, &dev_gsi) == 0)) {
> - dev_warn(&dev->dev, "PCI INT %c: no GSI - using ISA IRQ
> %d\n",
> - pin_name(pin), dev->irq);
> - acpi_register_gsi(&dev->dev, dev_gsi,
> - ACPI_LEVEL_SENSITIVE,
> - ACPI_ACTIVE_LOW);
> - } else {
> + if (acpi_isa_register_gsi(dev)) {
The curly brackets are not necessary here and you can even move the below into
acpi_isa_register_gsi().
> dev_warn(&dev->dev, "PCI INT %c: no GSI\n",
> pin_name(pin));
> }
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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