[PATCH 1/3] b43: replace DMA translation workarounds with just a one, commented

[Michael Büsch]

On Thu, 21 Jul 2011 17:33:51 +0200
Rafał Miłecki <zajec5 at gmail.com> wrote:

> 2011/7/21 Pavel Roskin <proski at gnu.org>:
> > On 07/20/2011 11:35 AM, Michael Büsch wrote:
> >>
> >> On Wed, 20 Jul 2011 13:10:55 +0200
> >> Rafał Miłecki<zajec5 at gmail.com>  wrote:
> >>
> >>> Sorry, for not explaining this well eno
> >>> ugh. I'm afraid of situation where b44 driver supports 64-bit DMA
> >>> device *without* handling this as such a device.
> >>
> >> A b44 or b43legacy device with 64bit DMA engine does not exist.
> >
> > There are many references to "B43legacy_DMA_64BIT" and "dma64_ops" in
> > b43legacy.  I guess they all are unneeded, and so is struct
> > b43legacy_dma_ops.
> >
> > b44 doesn't seem to have DMA64 support.  By the way, the result of
> > ssb_dma_translation() is placed into bp->dma_offset.  I think the word
> > "offset" is misleading.
> 
> Thanks for comment. I didn't have any time to review (&clean?)
> b43legacy, not to mention b44. Unfortunately I'm too busy with b43
> stuff for now. If you have some free time, you're input to the drivers
> is welcome :)
> 

For historical reasons there is unused 64bit dma code in b43legacy. I'm not sure whether it would even work. Probably not. Larry's fixes were most likely not ported over.