On Sunday 09 December 2007, Alan Cox wrote: > > drive->io_32bit is used per PIO transfer so there is no reason to > > require it to be identical for master/slave. > > Sure about that ? > > The driver has always gone to great pains to ensure that occurs and that > suggests the author had a good reason for doing it. Have you tested this > with an actual DTC2278 card ? > > If not - NAK. You risk corruptors for no material benefit. There is absolutely no hardware setup done by IDE subsystem or dtc2278 host driver when ->io_32bit setting is changed and since ->io_32bit setting is only ever checked per drive / PIO transfer so this is currently purely a software limitation (moreover HDIO_DRIVE_CMD and HDIO_DRIVE_TASKFILE ioctls force 16-bit I/O anyway). [ I also haven't noticed anything related to this requirement in Winbond W83759A datasheet (though I have only quickly skimmed through it)... ] Bart - 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
