On Mon, Aug 23, 2010 at 12:27:41PM -0400, Alan Stern wrote: > On Mon, 23 Aug 2010, Greg KH wrote: > > > On Mon, Aug 23, 2010 at 08:52:36AM -0700, Sarah Sharp wrote: > > > When the system is being shutdown, what USB core functions get invoked? > > > I know that usb_hcd_pci_shutdown() will get called for the host > > > controllers, but does anything get invoked for the USB devices? > > > > It should, do you not see that happen? > > > > > I'm specifically wondering what we do for external hubs with devices > > > attached to them when the system is rebooted. Does hub_disconnect() get > > > called? > > > > It should. > > This depends on what the host controller's shutdown routine does. If > it unregisters the root hub then disconnect processing will occur for > all the devices below the root hub. However I don't know that any HCDs > do this currently. They just disable the host controller and leave the > bus in an idle state. Ah, I didn't realize this, thanks. greg k-h -- 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
