Setting IDE mode to PIO for compact flash

[Gregg Nemas]

I have a compact flash connected to a PPC440GP processor in "true IDE"
mode. The DMA signals are not connected, so the device must be used in
PIO mode.

However, when I issue hdparm -i, it indicates that the current mode is
DMA mode mdma2, and I think this must be why I am getting "lost
interrupt" messages. Unfortunately, when I try to set the mode to PIO
using "hdparm -p1" or "hdparm -X9", it seems to have no effect.

What do I need to do to get the drive to be set to use PIO?

I amusing linux 2.6.12.3.

Thanks.

Gregg