[PATCH 04/18] dmaengine/amba-pl08x: Remove redundant comment and rewrite original

Russell King - ARM Linux linux at arm.linux.org.uk
Sat Jul 30 18:57:08 EDT 2011

On Sun, Jul 31, 2011 at 12:32:55AM +0200, Linus Walleij wrote:
> 2011/7/29 viresh kumar <viresh.linux at gmail.com>:
> > Nor mine either. :)
> >
> > Will give some more explanation.
> >
> > But before that i wanted to know the exact purpose of this
> > master-slave concept here.
> The PL08x has two bus mastering interfaces. They can be
> connected to two separate busses and two adress spaces
> even, usually that is not the case though.

This is not what the function is about... that's done by my
pl08x_select_bus() function.

This function (pl08x_choose_master_bus) does something completely
different, and has to do with how the LLIs are laid out.  I think
it's to do with whether we use the source or destination for
alignment purposes.

It really has nothing to do with choosing busses.

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