Hello, On Wed, Dec 26, 2012 at 09:42:14AM +0800, Aaron Lu wrote: > > This is really a round-about way to find out the matching device and > > it wouldn't work if the disk device nests deeper. Doesn't really look > > like a good idea to me. > > I don't quite understand the 'disk device nests deeper' case, can you > please elaborate? My understanding is, as long as the disk's part0 > device has a parent, this function should work. For LLDs want to take Hmmm, maybe I misread but it looked like it wouldn't work if there are intermediate nodes between the parent device and part0. It might not happen for sata but I don't think it's a good idea to assume that the part0 and hardware device are connected directly. In general, it's a quite roundabout way to do it. Let's just push it through SCSI. That's how everything else is routed after all. It's confusing to do this one differently. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html