Re: [PATCH v4 7/9] ARM: sun7i/sun4i: dt: Add AXP209 support to various boards

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On Thu, Apr 24, 2014 at 02:30:36PM +0100, Mark Brown wrote:
> On Wed, Apr 23, 2014 at 10:25:46PM +0200, Carlo Caione wrote:
> 
> > I'm having a really hard time with this problem, so any hint is welcome
> > :) The small modification I'm using on top of the patches in this series
> > is here: http://bpaste.net/show/228330/
> 
> > Unfortunately as I said I got this when booting:
> > http://bpaste.net/show/nUhUTzELT32v9HNPathL/
> 
> Huh, actually the arizona drivers do show this (it was being masked in
> my logs by another unrelated bug).  I guess the Wolfson guys aren't
> working with upstream much (though Charles did write the orignal code
> here...).

I run upstream fairly regularly here (although mostly on Arndale
rather than Speyside). On closer inspection of my kernel log
don't seem to have anything related to it, which is odd.

> The issue is the MFD core, it shouldn't be using managed allocations
> here - the error reported by the assert is entirely correct.  If the
> CODEC driver is bound and unbound it'll not be possible to reload it
> as things stand.  
> 
> Your driver is correct but the implementation needs to be fixed -
> possibly with an API change on free since at the minute the cells to be
> freed don't get passed back into the MFD core when deallocating.

This does indeed look broken, I will have a look and think about it.
Unfortunately I am travelling most of next week, so if I don't
manage to get something out over the weekend there may be a slight
delay on me getting a fix out.

Thanks,
Charles
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