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From: Robert Jarzmik <robert.jarzmik@free.fr>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Mark Brown <broonie@kernel.org>, linux-spi@vger.kernel.org,
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Subject: Re: [PATCH v3 2/3] spi: pxa2xx: Prepare for edge-triggered interrupts
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Date: Fri, 20 Jan 2017 08:42:11 +0100
In-Reply-To: <e692c4a9-6320-b9e0-d6e7-f58bbe6ba867@siemens.com> (Jan Kiszka's
        message of "Thu, 19 Jan 2017 20:37:40 +0100")
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Jan Kiszka <jan.kiszka@siemens.com> writes:

> When using the a device with edge-triggered interrupts, such as MSIs,
> the interrupt handler has to ensure that there is a point in time during
> its execution where all interrupts sources are silent so that a new
> event can trigger a new interrupt again.
>
> This is achieved here by disabling all interrupt sources for a moment
> before processing them according to the status register. If a new
> interrupt should have arrived after we read the status, it will now
> re-trigger the interrupt, even in edge mode.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>

Cheers.

--
Robert