linux-kernel - Re: [PATCH v6 3/3] irqchip/gic-v3-its: add ability to resend MAPC on resume

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Date:   Thu, 8 Feb 2018 10:02:04 -0800
From:   Brian Norris <briannorris@...omium.org>
To:     Derek Basehore <dbasehore@...omium.org>
Cc:     linux-kernel@...r.kernel.org, Soby.Mathew@....com,
        sudeep.holla@....com, devicetree@...r.kernel.org,
        robh+dt@...nel.org, mark.rutland@....com, linux-pm@...r.kernel.org,
        rafael.j.wysocki@...el.com, tglx@...utronix.de,
        marc.zyngier@....com
Subject: Re: [PATCH v6 3/3] irqchip/gic-v3-its: add ability to resend MAPC on
 resume

On Wed, Feb 07, 2018 at 06:36:48PM -0800, Derek Basehore wrote:
> This adds functionality to resend the MAPC command to an ITS node on
> resume. If the ITS is powered down during suspend and the collections
> are not backed by memory, the ITS will lose that state. This just sets
> up the known state for the collections after the ITS is restored.
> 
> This is enabled via the reset-on-suspend flag in the DTS. It only runs
> for collections stored in the ITS itself.
> 
> Signed-off-by: Derek Basehore <dbasehore@...omium.org>
> ---
>  drivers/irqchip/irq-gic-v3-its.c   | 86 +++++++++++++++++++++-----------------
>  include/linux/irqchip/arm-gic-v3.h |  1 +
>  2 files changed, 49 insertions(+), 38 deletions(-)

For the very little it's worth:

Reviewed-by: Brian Norris <briannorris@...omium.org>