linux-kernel - Re: [PATCH 01/22] mfd/ti_am335x

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Date:	Thu, 4 Jul 2013 11:45:11 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Benoît Cousson <b-cousson@...com>,
	Tony Lindgren <tony@...mide.com>,
	Jonathan Cameron <jic23@....ac.uk>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Felipe Balbi <balbi@...com>, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-iio@...r.kernel.org,
	linux-input@...r.kernel.org
Subject: Re: [PATCH 01/22] mfd/ti_am335x_tscadc: remove regmap

On Thu, Jul 04, 2013 at 11:02:41AM +0200, Sebastian Andrzej Siewior wrote:

> The driver here does not use atomic updates but read followed by write
> so your locking here is futile. So the API/regmap alone does not make

Doesn't that sound like the driver ought to be using a r/m/w primitive
though?

> it right. And look: the MFD part uses regmap. Its children (IIO &
> input) do not use it. After I told this Samuel he said that it is okay.

Again I think the point here was that they probably ought to do so.

But I guess if you're saying there's no problem that's fine...

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