Re: [PATCH 1/7] k3dma: Fix hisi burst clipping

From: Vinod Koul
Date: Thu Aug 04 2016 - 09:01:08 EST


On Fri, Jul 29, 2016 at 03:40:46PM -0700, John Stultz wrote:
> On Sun, Jul 24, 2016 at 12:25 AM, Vinod Koul <vinod.koul@xxxxxxxxx> wrote:
> > On Wed, Jul 20, 2016 at 08:53:03PM -0700, John Stultz wrote:
> >> From: Andy Green <andy.green@xxxxxxxxxx>
> >>
> >> Max burst len is a 4-bit field, but at the moment it's clipped with
> >> a 5-bit constant... reduce it to that which can be expressed
> >
> > Maybe we should GENMASK() etc to avoid these errors..
>
> Not sure I follow what you're thinking here... can you clarify a bit?

I am assuming the 4bit field was a mistake by orignal author. Using GENMASK,
BIT etc macro helps you to avoid those as one would look at datasheet and
say this is specfied as bit 5 thru 9, so let me say GENMASK(5, 0) rather
than a typo which missed 5th bit.

But ofcourse if the error was due to some other reason then this one doesnt
help.

--
~Vinod