From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Rosin <peda@lysator.liu.se>
Subject: Re: [PATCH 10/10] i2c: pca954x: get rid of the i2c deadlock workaround
Date: Mon, 04 Jan 2016 16:45:36 +0100
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To: Lars-Peter Clausen <lars@metafoo.de>, Wolfram Sang <wsa@the-dreams.de>
Cc: Peter Rosin <peda@axentia.se>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Peter Korsgaard <peter.korsgaard@barco.com>, Guenter Roeck <linux@roeck-us.net>, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
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On 2016-01-04 16:19, Lars-Peter Clausen wrote:
> On 01/04/2016 04:10 PM, Peter Rosin wrote:
>> From: Peter Rosin <peda@axentia.se>
>>
>> Signed-off-by: Peter Rosin <peda@axentia.se>
> 
> It would be quite good if the commit messaged said why it is now safe to
> remove the workaround.

Right, hmm, the two last patches seemed obvious at the time I wrote them,
but now I see a problem.

E.g. if two pca954x devices that depends on being idle when client devices
are not accessed happen to sit on the same bus (perhaps because the muxes
are used to hide a bunch of identical devices), it is indeed not safe to
make this change.

Thanks for making my think, and consider 9/10 and 10/10 dropped.

Cheers,
Peter