Re: [PATCH] ACPI/PCI: pci_link: use extended_irq union member when setting ext-irq shareable

[Bjorn Helgaas <helgaas@kernel.org>]

On Fri, Apr 10, 2020 at 03:14:42PM +0200, Hans de Goede wrote:
> The case ACPI_RESOURCE_TYPE_EXTENDED_IRQ inside acpi_pci_link_set()
> is correctly using resource->res.data.extended_irq.foo for most settings,
> but for the sharable setting it sofar has accidentally been using
> resource->res.data.irq.shareable instead of
> resource->res.data.extended_irq.shareable.
> 
> Note that the old code happens to also work because the sharable field
> offset is the same for both the acpi_resource_irq and
> acpi_resource_extended_irq structs.

s/sharable/shareable/ several times above
s/sofar/so far/

> Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Acked-by: Bjorn Helgaas <bhelgaas@google.com>

> ---
>  drivers/acpi/pci_link.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
> index 00a6da2121be..ed3d2182cf2c 100644
> --- a/drivers/acpi/pci_link.c
> +++ b/drivers/acpi/pci_link.c
> @@ -322,10 +322,10 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
>  		resource->res.data.extended_irq.polarity =
>  		    link->irq.polarity;
>  		if (link->irq.triggering == ACPI_EDGE_SENSITIVE)
> -			resource->res.data.irq.shareable =
> +			resource->res.data.extended_irq.shareable =
>  			    ACPI_EXCLUSIVE;
>  		else
> -			resource->res.data.irq.shareable = ACPI_SHARED;
> +			resource->res.data.extended_irq.shareable = ACPI_SHARED;

Ouch, looks like that copy/paste error has been there since the
beginning of git.  Nice catch!

>  		resource->res.data.extended_irq.interrupt_count = 1;
>  		resource->res.data.extended_irq.interrupts[0] = irq;
>  		/* ignore resource_source, it's optional */
> -- 
> 2.26.0
>