Hello, On 10/05/2010 04:06 PM, Mark Lord wrote: > Yeah, maybe something like that. > > But do note that I have verified that "hdparm -C" does work correctly, > and is dependent upon correctly returned result_tf values. > > It's not a PIO "data" command, though. Does it get issued the same way? PIO Setup FIS is not used for nodata commands. IIRC, nodata uses D2H Reg FIS for command completion. I think the only exception is PIO data commands. The weird hack is to satisfy PIO data command protocol timing requirement stemming from PATA specification. Eh... ugly. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html