linux-kernel - Re: [PATCH v2 2/5] spi: spi-fsl-dspi: Exit the ISR with IRQ

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Message-ID: <20190823102816.GN23391@sirena.co.uk>
Date:   Fri, 23 Aug 2019 11:28:16 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2 2/5] spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE
 when it's not ours

On Fri, Aug 23, 2019 at 12:15:11AM +0300, Vladimir Oltean wrote:
> The DSPI interrupt can be shared between two controllers at least on the
> LX2160A. In that case, the driver for one controller might misbehave and
> consume the other's interrupt. Fix this by actually checking if any of
> the bits in the status register have been asserted.

It would be better to have done this as the first patch before
the restructuring, that way we could send this as a fix - the
refactoring while good doesn't really fit with stable.

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