On Sad, 2006-04-01 at 01:38 +0900, Tejun Heo wrote: > Implement ata_down_xfermask_limit(). This function manipulates > @dev->pio/mwdma/udma_mask such that the next lower transfer mode is > selected. This will be used by ata_bus_probe() rewrite and later by > EH speeding down. This will need care. If it is called during a transfer mode change on error we should document that this function will only be called after the host_set has been quiesced, otherwise drivers that peek a lot at their ap-> mode settings at runtime (eg on an IRQ occuring during a speed change down) are going to burned badly. It would be nice to see a description of the locking model for a changedown at this point. Alan - : 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
