On Fri, Jun 21, 2013 at 5:20 PM, Oliver Neukum <[email protected]> wrote: > > This is highly problematic. It is bound to cause resource leaks. > >> called. The situation might happen when driver->remove() doesn't >> kill the URBs with the patch applied. > > Well, there is no good way to handle this. But we have a simple rule. > If usb_submit_urb() succeeds, complete() will be called. > Breaking this rule is a bad idea.
The rule should be enhanced by calling complete() before completing driver unbind. > > The best way is really to make sure that no URB survive. Drivers may let usbcore to do that by not setting driver->soft_unbind. I will fix the problem in v2, one solution I thought of is to flush the endpoint's URBs which have been added to tasklet list at the end of usb_hcd_flush_endpoint(). Any comments? Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
