lkml.org 
[lkml]   [2009]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] wireless: introduce POWEROF2_BLOCKSIZE_ONLY option
On Fri, Feb 06, 2009 at 04:00:28PM +0800, Bryan Wu wrote:
> On Fri, Feb 6, 2009 at 3:47 PM, Bryan Wu <cooloney@kernel.org> wrote:
> > On Thu, Feb 5, 2009 at 11:03 PM, Dan Williams <dcbw@redhat.com> wrote:
> >> On Thu, 2009-02-05 at 15:30 +0800, Bryan Wu wrote:
> >>> From: Cliff Cai <cliff.cai@analog.com>
> >>>
> >>> Introduce POWEROF2_BLOCKSIZE_ONLY option for those SD/SDIO host
> >>> which only support transferring block with size of power-of-2
> >>
> >> Is the point here to avoid copying in the controller code? As with the
> >> other patches on libertas-dev, I really dislike adding code to *every
> >> SDIO driver* just because the host has certain restrictions. I'd much
> >> rather that the host/controller code became aware of it's own
> >> restrictions, and exposed those generically to drivers above it.
> >> Without a KConfig option.
> >>
> >> Seriously. The host knows what it needs. The code to handle that
> >> should go in the host.
> >>
> >
> > I agree here.
> >
> >> How about adding a method like "sdio_align_size" that takes the
> >> controller's constraints into account? That seems a lot cleaner than
> >> adding #define/KConfig junk to every SDIO driver in the kernel. One
> >> less codepath to test, makes your life and all our lives easier.
> >>
> >
> > So we plan to add method ".sdio_align_size" to SDIO stack.
> > And Blackfin host driver will implement this method while others will
> > implement this as a dummy function.
> >
>
> sdio_align_size is already in SDIO stack, so we just need to add our
> constraints to this function.

I'm reading this as "this patch is unnecessary or will be replaced
by something better", so I'm dropping it. If I misread that, feel
free to repost...thanks!

John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.


\
 
 \ /
  Last update: 2009-02-10 17:19    [W:0.045 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site