Am Montag 24 September 2007 schrieb Alan Stern: > On Mon, 24 Sep 2007, Oliver Neukum wrote: > > > > subsystem implements its own form of runtime PM support, then you'll be > > > able to use it properly. But until then, there isn't anything much you > > > can do. > > > > Well, we can't simply cut power. Buffers must be flushed and the disk > > spun down. The suspend() method of the storage driver will have to become > > complex. > > That's right, if the device is a real disk. If it's a flash memory > device then of course these issues don't arise. Unfortunately the With respect to buffers how sure are you about that? > driver isn't able to tell one from the other; the user will have to > do that for us. Code for what we need is in sd_suspend(). The only trouble is locking. We need to make sure no commands that dirty buffers are issued after flushing the buffers. Regards Oliver - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
