Re: [PATCH v2 03/13] hwmon: Versatile Express hwmon driver

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On Wed, Sep 19, 2012 at 06:04:48PM +0100, Pawel Moll wrote:
> Hi Guenter,
> 
> Thanks for your quick response (and apologies about me being delayed), I
> appreciate your time!
> 
> On Tue, 2012-09-18 at 16:24 +0100, Guenter Roeck wrote:
> > and a highly unusual way of, as much as I understand of it, bypass the hwmon
> > infrastructure as much as possible.
> 
> I can assure you that it wasn't my aim. Generally, my platform has a lot
> of small "control" devices providing one sensor each. And as they are
> separate from the device model point of view, I wanted them to be
> logically grouped around a single hwmon device (I was actually looking
> at the coretemp driver). But it's not a big deal, really.
> 
I don't think the coretemp driver does what you are doing in your driver ...

> > I don't even understand what you are trying to do, much less why you don't
> > just use the existing infrastructure, and I don't have time to try to figure
> > it out. Maybe Jean has time to review this driver, but not me.
> > 
> > So, no, for my part I don't think it would be a good idea to rush this driver
> > into 3.7.
> > 
> > Really, I would suggest to submit a standard hwmon driver (there are lots of
> > examples out there).
> 
> Sure thing, I'll quickly spin a simplified version and post it for
> review.
> 
When you do that, please have a look at Documentation/hwmon/submitting-patches,
specifically the "New drivers" section.

Regarding your device model, yes, it is a bit odd that you have a separate
platform device for each sensor, especially if the vexpress is physically a
single chip. It would be much simpler to have a single vexpress-hwmon platform
device instead. But if you insist having such a complicated platform device
architecture, you should not try to clean it up with a complicated and
difficult to understand hwmon driver.

Thanks,
Guenter

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