linux-kernel - Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero

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Date:	Thu, 20 Aug 2015 16:48:36 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	linux-sunxi@...glegroups.com, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org
Subject: Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero

On Thu, Aug 20, 2015 at 02:19:46PM -0000, Michal Suchanek wrote:
> When the maximum transfer speed is not set for a SPI slave the value
> remains 0 and the code in sunxi SPI divides by it. Use an arbitrary
> speed instead in that case.
> 
> Signed-off-by: Michal Suchanek <hramrach@...il.com>

spi->max_speed_hz is set using the spi-max-frequency property, and
spi->will error out if that property isn't set. What am I missing?

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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