From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Mark Salter <msalter@redhat.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>, linux-acpi@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] acpi: Fix proper return code for function acpi_gsi_to_irq
Date: Wed, 12 Jul 2017 23:19:13 +0200
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On Tuesday, July 11, 2017 12:45:43 PM Mark Salter wrote:
> The function acpi_gsi_to_irq must return 0 on success as the caller
> ghes_probe expects an 0 for success. This change also matches x86
> implementation.
> 
> This patch was submitted around 4.5 timeframe but wasn't pushed because
> it didn't fix a real problem. Now that RAS/GHES patches are in kernel,
> this fixes an error seen on a Mustang (arm64) platform:
> 
>     GHES: Failed to map GSI to IRQ for generic hardware error source: 2
>     GHES: probe of GHES.2 failed with error 81
> 
> Signed-off-by: Tuan Phan <tphan@apm.com>
> Signed-off-by: Loc Ho <lho@apm.com>
> [rebased to v4.12-rc]
> Signed-off-by: Mark Salter <msalter@redhat.com>

Applied with the Lorenzo's ACK.

Thanks,
Rafael