linux-kernel - Re: [PATCH v2 5/5] ARM: dts: ls1021a-tsn: Use the DSPI controller in poll mode

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Message-ID: <20190827183154.GI23391@sirena.co.uk>
Date:   Tue, 27 Aug 2019 19:31:54 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     linux-spi@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        Rob Herring <robh@...nel.org>, Shawn Guo <shawnguo@...nel.org>
Subject: Re: [PATCH v2 5/5] ARM: dts: ls1021a-tsn: Use the DSPI controller in
 poll mode

On Tue, Aug 27, 2019 at 09:16:39PM +0300, Vladimir Oltean wrote:

> I can't seem to find any situation where it performs worse. Hence my
> question on whether it's a better idea to condition this behavior on a
> Kconfig option rather than a DT blob which may or may not be in sync.

If it's unconditionally worse then it shouldn't even be a Kconfig
option, just make the driver just never use the interrupt.

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