On Fri, 22 Oct 2010, Greg KH wrote: > On Fri, Oct 22, 2010 at 02:53:07PM +0530, suman wrote: > > Hello all > > > > I develop wifi support over USB Bus over mobile type device. It is to > > connect with ralink 8572 device, I do not think it is problem with > > this driver as i check with another device ( not mobile device). I > > work on 2.6.28, my mobile device is embedded and i cannot change OS > > with latest kernel. > > Why can't you change your kernel? What is preventing this? Is it a > vendor-provided kernel? If so, please work with them. > > If you are relying on out-of-tree code, please work with the providers > of that to get it upstream. > > And finally, you do realize just how old the 2.6.28 kernel is, right? > > I think you just might be on your own here, unless you can reproduce the > problem on the 2.6.36 kernel. Even that probably won't help, since overcurrent is a hardware problem. Evidently the ralink device wants to draw more power than the mobile device is capable of providing. Adding a powered hub might help. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html