Interesting development regarding b43 DMA ERROR

[Rafał Miłecki]

2010/8/5 Larry Finger <Larry.Finger at lwfinger.net>:
> Yesterday, I had to go back to kernel 2.6.34 for a test of code to avoid ssb
> load freezeups on my HP Mini 110 Netbook, which has the SPROM at offset 0x0800,
> not 0x1000. As I had been using b43 for this BCM4312 (14e4:4315) card in DMA
> mode without any problems, I was quite surprised to see the dreaded DMA errors.
> I had attributed the lack of errors with wireless testing to be due to the AMI,
> not Phoenix, BIOS in this machine. When I switched to mainline ('git describe'
> reports it as v2.6.35-3370-gcdd854b), again it works.
>
> AFAIK, none of any fixes that were put into wt to try to solve this problem had
> any affect, yet the device now works here.
>
> Is anyone else that had/has the DMA problem running 2.6.35 + updates from the
> linux-2.6.git tree? If so, does your BCM4312 now work with b43, or is my box
> special?

Interesting. It means some patch that gone mainline fixed it and it
was submitted using other tree than w-t, right?

Would you care to bisect this?

-- 
Rafał