lkml.org 
[lkml]   [2008]   [May]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 0/3] Add API for weak DMA masks
Date
On Thursday 01 May 2008 17:43:58 Christoph Hellwig wrote:
> On Thu, May 01, 2008 at 05:42:04PM +0200, Michael Buesch wrote:
> > Yeah. because it has to be done in every driver.
> > So we put the implementation into a central place, instead of
> > reimplementing the wheel over and over again. This way we avoid bugs,
> > like the "b43 broken on VIA boards" in the first place.
> > Currently every driver requesting a >32bit mask and not retrying with
> > a lower mask is broken on VIA hardware. I dunno how many of the current
> > drivers that are, but everybody can easily see that is not a b43-specific
> > problem that we should solve for b43 only.
>
> Yeah. Personally I'd rather let set_dma_mask fall back silently,

We've discussed that and this behaviour is not acceptable, as the driver
must know about a possible fallback in case it can do 32bit DMA
more efficiently than 64bit DMA, for example.

So here we go. People rejected that approach, that I also suggested.
Here's what people want.

--
Greetings Michael.


\
 
 \ /
  Last update: 2008-05-01 17:51    [W:1.591 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site