Bug in promise_new ide conteroller (was: Re: [BUG] PDC20268 crashing during DMA setup on stock Debian 2.6.12-1-powerpc)

[Kasper Sandberg <lkml@metanurb.dk>]

i have a promise controller and it fails too, but only some times (never
during startup).. i get the following errors:
hdf: dma_intr: bad DMA status (dma_stat=75)
hdf: dma_intr: status=0x50 { DriveReady SeekComplete }
ide: failed opcode was: unknown
hdf: dma_timer_expiry: dma status == 0x60
hdf: DMA timeout retry
PDC202XX: Primary channel reset.
hdf: timeout waiting for DMA

and i know for a fact it isnt the indidual controller, as i tried with 2
other brand new ones, and i know it isnt the drives/cables/computer,
since i tried switching it all around, and it keeps happening.

if it does this while reading/writing the system hardlocks..


i wrote promise technical support, which said it could be caused by
sharing interrupts, so i checked, and it did share with my NIC, so i
switched to another pci slot, and now it has its own interrupt, YET it
still keeps doing this..

i would greatly apreciate any help

On Mon, 2005-11-21 at 08:00 +1100, Benjamin Herrenschmidt wrote:
> > This is the only possibility that I can think of, but I'm having a  
> > hard time getting enough lines of pre-BUG output.  Is there any way  
> > to turn off the BUG() lines and just show the printks before that point?
> 
> There is a patch from Thibault that fixes it, it should be in 2.6.15-rc2
> 
> Ben.
> 
> 
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