linux-kernel - Re: [PATCH v2 1/3] spi: spi-fsl-dspi: Fix external abort on interrupt in exit paths

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Message-ID: <CA+h21hpusy=zx8AuUqk_4zShtst8QeNJxCPT4dMGh0jhm5uZng@mail.gmail.com>
Date:   Mon, 15 Jun 2020 16:12:28 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Marc Kleine-Budde <mkl@...gutronix.de>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vladimir Oltean <vladimir.oltean@....com>,
        linux-spi <linux-spi@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Wolfram Sang <wsa@...nel.org>, stable@...r.kernel.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: Re: [PATCH v2 1/3] spi: spi-fsl-dspi: Fix external abort on interrupt
 in exit paths

On Mon, 15 Jun 2020 at 16:10, Mark Brown <broonie@...nel.org> wrote:

>
> It's a bit unusual to need to actually free the IRQ over suspend -
> what's driving that requirement here?

clk_disable_unprepare(dspi->clk); is driving the requirement - same as
in dspi_remove case, the module will fault when its registers are
accessed without a clock.

-Vladimir