Panic on boot with today's CURRENT, ata related

[Radek Kozlowski]

On Fri, Aug 06, 2004 at 03:31:06PM -0700, Nate Lawson wrote:
> It looks like the DMA object for the channel is not being initialized. 
> However, that is in another path (this backtrace is just a symptom 
> triggered by the first DMA access to the drive).  Someone who knows more 
> about the control path for going from PIO -> DMA mode will have to look 
> into this.

I would like to stress that it only happens with ACPI enabled. If I boot
with ACPI disabled the transfer mode is set to UDMA100. Shall I provide
you with more info?

Thanks,

-Radek