linux-kernel - Re: [PATCH v2 3/7] ACPI / APEI: add OSC APEI bit check for ghes

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Message-ID: <20170804034417.GC12082@nazgul.tnic>
Date:   Fri, 4 Aug 2017 05:44:17 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Toshi Kani <toshi.kani@....com>
Cc:     rjw@...ysocki.net, mchehab@...nel.org, tony.luck@...el.com,
        lenb@...nel.org, linux-acpi@...r.kernel.org,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/7] ACPI / APEI: add OSC APEI bit check for ghes_edac

On Thu, Aug 03, 2017 at 03:57:49PM -0600, Toshi Kani wrote:
> When 'osc_sb_apei_support_acked' is set, it indicates that
> the platform supports APEI, firmware-first mode, as ACPI _OSC
> capability bit 4, APEI Support, was set in query.  While _OSC
> is an optional method, platforms with APEI support should
> implement it to inform its capability to the OS properly.
> 
> Add check to 'osc_sb_apei_support_acked' before calling
> ghes_edac_register() to restrict that ghes_edac is enabled
> on platforms with APEI support capability set in _OSC.
> 
> Signed-off-by: Toshi Kani <toshi.kani@....com>
> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
> Cc: Tony Luck <tony.luck@...el.com>
> ---
>  drivers/acpi/apei/ghes.c |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index d661d45..49d75eb 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -1139,9 +1139,11 @@ static int ghes_probe(struct platform_device *ghes_dev)
>  		goto err;
>  	}
>  
> -	rc = ghes_edac_register(ghes, &ghes_dev->dev);
> -	if (rc < 0)
> -		goto err;
> +	if (osc_sb_apei_support_acked) {

What for when we have the whitelist?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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