> 3) It is critical to ensure that the ATA "ctl" register is never > written to when no drive is attached. This means bracketing the SRST > sequence to first do a PCS detection before permitting the SRST. > If "ctl" is accessed with no drive attached, the machine locks up hard.
At least for PATA you probably need to disable IORDY handshaking before the reset and probe. Alan - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html