On Wed, Jan 16 2002, Andre Hedrick wrote:
> 
> 
> This is a problem that is bigger than simplely issueing a simple
> setfeatures non-data-pio command.  All of the PIO data-phases are broken.
> Nothing works but DMA, and there is no reason it should fail.
> 
> Something has gone totally wrong between the 2.5.1 patch submitted to it
> being applied for the creation of 2.5.3-pre1.
> 
> If the driver falls out of DMA, DEADBOX!!!!
> There is a conflict of BIO and ACB and it is very fatal.
> 
> Therefore I will have to withdraw the patch and resubmit with the legacy
> data-path added back so the kernel development can continue.
> 
> The only kernel in the development series known to work is 2.5.1.
> However it appears that several people can not successfully use this
> CodeBase either.

2.5.1 still requires at least this patch to be closer to correct, I
haven't verified if it does the trick completely though. For 2.5.3-pre1,
more work needs to be done.

-- 
Jens Axboe