linux-kernel - Re: [PATCH] i2c: rk3x: fix 0 length write transfers

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Message-ID: <20141003002721.GC1323@katana>
Date:	Fri, 3 Oct 2014 02:27:21 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Alexandru M Stan <amstan@...omium.org>
Cc:	Max Schwarz <max.schwarz@...ine.de>,
	Doug Anderson <dianders@...omium.org>,
	Sonny Rao <sonnyrao@...omium.org>,
	addy ke <addy.ke@...k-chips.com>,
	Jeffy Chen <jeffy.chen@...k-chips.com>,
	ZhengShunQian <zhengsq@...k-chips.com>,
	linux-rockchip@...ts.infradead.org, heiko@...ech.de,
	linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: rk3x: fix 0 length write transfers

On Wed, Oct 01, 2014 at 10:40:41AM -0700, Alexandru M Stan wrote:
> i2cdetect -q was broken (everything was a false positive, and no transfers were
> actually being sent over i2c). The way it works is by sending a 0 length write
> request and checking for NACK. This patch fixes the 0 length writes and actually
> sends them.
> 
> Reported-by: Doug Anderson <dianders@...omium.org>
> Signed-off-by: Alexandru M Stan <amstan@...omium.org>

Applied to for-current, thanks!


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