Re: [PATCH 1/2] ACPI, PCI, ISA: Call ISA-specific code only for architectures which support ISA.

From: Rafael J. Wysocki
Date: Fri Feb 14 2014 - 19:50:30 EST


On Monday, February 10, 2014 02:00:10 PM Tomasz Nowicki wrote:
> This commit enables ISA-specific code if and only if CONFIG_{E}ISA is set
> in the kernel configuration 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.nowicki@xxxxxxxxxx>
> ---
> drivers/acpi/pci_irq.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
> index 41c5e1b..b0e31b6 100644
> --- a/drivers/acpi/pci_irq.c
> +++ b/drivers/acpi/pci_irq.c
> @@ -418,6 +418,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
> * driver reported one, then use it. Exit in any case.
> */
> if (gsi < 0) {
> +#if IS_ENABLED(CONFIG_ISA) || IS_ENABLED(CONFIG_EISA)

Can you please move the code in question into a separate function and make
that function depend on the above (with an empty stub for when they are not
enabled)?

> u32 dev_gsi;
> /* Interrupt Line values above 0xF are forbidden */
> if (dev->irq > 0 && (dev->irq <= 0xF) &&
> @@ -427,10 +428,9 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
> acpi_register_gsi(&dev->dev, dev_gsi,
> ACPI_LEVEL_SENSITIVE,
> ACPI_ACTIVE_LOW);
> - } else {
> - dev_warn(&dev->dev, "PCI INT %c: no GSI\n",
> - pin_name(pin));
> - }
> + } else
> +#endif
> + dev_warn(&dev->dev, "PCI INT %c: no GSI\n", pin_name(pin));
>
> return 0;
> }
>

--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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