Messages in this thread | | | Date | Tue, 11 Apr 2006 00:13:59 +0200 | From | Benoit Boissinot <> | Subject | Re: [RFC/PATCH] remove unneeded check in bcm43xx |
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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 ?
regards,
Benoit
ps: i do not have the hardware so i sadly cannot test.
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