GPIO regression in Linux next caused by syscon change

[Philipp Zabel]

Am Montag, den 15.02.2016, 08:01 -0800 schrieb Tony Lindgren:
> * Philipp Zabel <philipp.zabel at gmail.com> [160214 11:24]:
> > I've just replaced the of_iomap() call with an open coded version,
> > calling of_address_to_resource() and ioremap() directly. That was
> > needed so I can use the struct resource returned by
> > of_address_to_resource() to set the syscon_config.max_register. I
> > don't see where this could cause resource overlap. Does just setting
> > syscon_config.max_register to zero again make the problem disappear?
> 
> Yes commenting out the syscon_config.max_register line in your patch
> makes things work again.
> 
> So what does that tell us about the problem?

Maybe some out of bounds writes that previously worked are now catched
by the max_register check in regmap_writable and regmap_write returns
-EIO instead of the write being executed.
Is there any omap_ctrl_write?() call with an offset > 0x32c into
scm_conf?

regards
Philipp