lkml.org 
[lkml]   [2006]   [Apr]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [RFC/PATCH] remove unneeded check in bcm43xx
From
From: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Date: Tue, 11 Apr 2006 00:13:59 +0200

> On Mon, Apr 10, 2006 at 09:46:30AM -0400, John W. Linville wrote:
> > On Mon, Apr 10, 2006 at 06:28:00AM +0200, Michael Buesch wrote:
> >
> > > To summerize: I actually added these messages, because people were
> > > hitting "this does not work with >1G" issues and did not get an error message.
> > > So I decided to insert warnings until the issue is fixed inside the arch code.
> > > I will remove them once the issue is fixed.
> >
> > This sounds like the same sort of problems w/ the b44 driver.
> > I surmise that both use the same (broken) DMA engine from Broadcom.
> >
> > Unfortunately, I don't know of any good solution to this. There are
> > a few hacks in b44 that deal with the issue. I don't like them,
> > although I am the perpetrator of at least one of them. It might be
> > worth looking at what was done there?
>
> The hacks i see there is reallocating a buffer with GFP_DMA, so that
> means that if the ppc dma_alloc_coherent did the same thing as the i386
> counterpart (adding GFP_DMA if dma_mask is less than 32bits) it should
> work, no ?

PowerPC doesn't have a seperate GFP_DMA page pool, so this won't work.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-04-11 00:31    [W:0.057 / U:0.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site