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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20150820184504.GP12027@sirena.org.uk>
Date:	Thu, 20 Aug 2015 11:45:04 -0700
From:	Mark Brown <broonie@...nel.org>
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>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	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.

You should always be using the transfer speed that is defined per
transfer, the core will ensure that this is always set.

Download attachment "signature.asc" of type "application/pgp-signature" (474 bytes)