> It's for draining. Let's say drive says it wanna transfer 18 bytes but > the buffer is only 13 bytes long. If the transfer method consumes 2 > bytes per read, it would consume 14 bytes. If the transfer method > consumes 4 bytes per read, it would consume 16 bytes. If we drain too > much, we risk hanging the machine. Do we have any actual cases where trying to drain beyond the controller granuality is a problem ? Might be cleaner to sort this (and the DMA assumption of 2 byte alignment, and possibly 16 byte for some devices/controllers) with dev->pio_io_size; dev->dma_io_size; - 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
