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
