Re: [PATCH 01/22] mfd/ti_am335x_tscadc: remove regmap

[Sebastian Andrzej Siewior]

On 07/04/2013 12:45 PM, Mark Brown wrote:
> 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 does this in the init phase before the child devices are created so
no harm is done. I just wanted to say that regmap alone does not help
as long as the use simply replaces all reads & writes with regmap reads
& writes.

> 
>> 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.

It didn't sound that way.

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

Samuel, is it okay if I repost the patch? It can wait till past -rc1 if
you are willing to take it.

Sebastian
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