On Tue, 28 Aug 2012, megha dey wrote: > In host mode,while continuously connecting and disconnecting a USB > device,sometimes enumeration does not happen(kernel 3.0.31).We see > that the hub_thread is blocked in the schedule() function.The > following is the function trace: ... > This happens in the case wherein there is a race condition between the > suspend (following the disconnect) and the resume (on > re-connection).Was a similar issue observed in this kernel? Are there > any patches available? > > Also,this issue is not seen on kernel3.4.However ,I require some > suggestions to resolve this issue on kernel3.0.31. > > Kindly provide appropriate feedback. Commit f2791d733a2f06997b573d1a3cfde21e6f529826 (PM / Runtime: don't forget to wake up waitqueue on failure) might solve your problem. 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
