linux-kernel - Re: [PATCH v3 03/13] spi: sun4i: fix FIFO limit

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Message-ID: <20160613195601.GC2600@lukather>
Date:	Mon, 13 Jun 2016 21:56:01 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	linux-sunxi@...glegroups.com, stable@...r.kernel.org,
	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>,
	Chen-Yu Tsai <wens@...e.org>,
	Russell King <linux@...linux.org.uk>,
	Mark Brown <broonie@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Olof Johansson <olof@...om.net>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Simon Horman <horms+renesas@...ge.net.au>,
	Sjoerd Simons <sjoerd.simons@...labora.co.uk>,
	Thierry Reding <treding@...dia.com>,
	Alison Wang <b18965@...escale.com>,
	Timo Sigurdsson <public_timo.s@...entcreek.de>,
	Jonathan Liu <net147@...il.com>,
	Gerhard Bertelsmann <info@...hard-bertelsmann.de>,
	Priit Laes <plaes@...es.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org
Subject: Re: [PATCH v3 03/13] spi: sun4i: fix FIFO limit

On Mon, Jun 13, 2016 at 05:46:49PM -0000, Michal Suchanek wrote:
> When testing SPI without DMA I noticed that filling the FIFO on the
> spi controller causes timeout.
> 
> Always leave room for one byte in the FIFO.
> 
> Signed-off-by: Michal Suchanek <hramrach@...il.com>

Acked-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

Thanks,
Maxime

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

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