linux-kernel - Re: [PATCH] i2c: omap: fix i207 errata handling

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Message-Id: <089B5BDA-682D-46B6-869F-A6ADDFE691C3@gmail.com>
Date:	Fri, 21 Nov 2014 03:29:40 +0300
From:	Alexander Kochetkov <al.kochet@...il.com>
To:	linux-omap@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Alexander Kochetkov <al.kochet@...il.com>
Cc:	Wolfram Sang <wsa@...-dreams.de>, Tony Lindgren <tony@...mide.com>,
	Felipe Balbi <balbi@...com>,
	Aaro Koskinen <aaro.koskinen@....fi>
Subject: Re: [PATCH] i2c: omap: fix i207 errata handling

21 нояб. 2014 г., в 3:16, Alexander Kochetkov <al.kochet@...il.com> написал(а):

> commit 6d9939f651419a63e091105663821f9c7d3fec37 (i2c: omap: split out [XR]DR
> and [XR]RDY) changed the way how errata i207 (I2C: RDR Flag May Be Incorrectly
> Set) get handled.

It's is seen if open 6d9939f651419a63e09^ and 6d9939f651419a63e09 side by side:

6d9939f651419a63e09^:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/i2c/busses/i2c-omap.c?id=540a4790f7da0d3ca5ad9d726f198a5eb4db05ec#n800

6d9939f651419a63e09:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/i2c/busses/i2c-omap.c?id=6d9939f651419a63e091105663821f9c7d3fec37#n800

Errata "2C: RDR Flag May Be Incorrectly Set"
http://www.ti.com/lit/er/sprz319f/sprz319f.pdf

21 нояб. 2014 г., в 3:16, Alexander Kochetkov <al.kochet@...il.com> написал(а):

> Found by code review. Real impact haven't seen.
> Tested on Beagleboard XM C.

Does anybody know the "certain rare conditions" when RDR errata appears?
I tested without luck (Beagleboard XM C).

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