linux-kernel - Re: [PATCH v6 1/1] acpi: apei: Enable APEI multiple GHES source to share a single external IRQ

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Date:   Sat, 22 Jul 2017 07:59:54 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Loc Ho <lho@....com>
Cc:     msalter@...hat.com, rafael@...nel.org, tbaicar@...eaurora.org,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, patches@....com
Subject: Re: [PATCH v6 1/1] acpi: apei: Enable APEI multiple GHES source to
 share a single external IRQ

On Fri, Jul 21, 2017 at 11:24:37AM -0700, Loc Ho wrote:
> X-Gene platforms describe multiple GHES error sources with the same hardware
> error notification type (external interrupt) and interrupt number.
> Change the GHES interrupt request to support sharing the same IRQ.
> 
> Co-authored-by: Tuan Phan <tphan@....com>
> Signed-off-by: Loc Ho <lho@....com>
> ---
>  drivers/acpi/apei/ghes.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index d661d45..eed09fc 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -1157,7 +1157,8 @@ static int ghes_probe(struct platform_device *ghes_dev)
>  			       generic->header.source_id);
>  			goto err_edac_unreg;
>  		}
> -		rc = request_irq(ghes->irq, ghes_irq_func, 0, "GHES IRQ", ghes);
> +		rc = request_irq(ghes->irq, ghes_irq_func, IRQF_SHARED,
> +				 "GHES IRQ", ghes);
>  		if (rc) {
>  			pr_err(GHES_PFX "Failed to register IRQ for generic hardware error source: %d\n",
>  			       generic->header.source_id);
> -- 

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--