On Mon, Jan 21, 2019 at 09:20:52PM +0000, Måns Rullgård wrote: > Bin Liu <b-liu@xxxxxx> writes: > > > On Fri, Jan 18, 2019 at 08:15:02PM +0000, Måns Rullgård wrote: > >> Bin Liu <b-liu@xxxxxx> writes: > >> > >> > On Mon, Dec 17, 2018 at 09:36:17PM +0000, Måns Rullgård wrote: > >> >> Bin Liu <b-liu@xxxxxx> writes: > >> >> > >> >> > On Mon, Dec 17, 2018 at 07:16:08PM +0000, Måns Rullgård wrote: > >> >> >> Bin Liu <b-liu@xxxxxx> writes: > >> >> >> > >> >> >> > Hi, > >> >> >> > > >> >> >> > On Mon, Dec 17, 2018 at 03:13:12PM +0000, Måns Rullgård wrote: > >> >> >> >> I have a strange problem with the musb driver in host mode on AM3358 > >> >> >> >> (beaglebone) hardware. If I connect a multi-port serial adapter and > > > > Is this on beaglebone or beagleboneblack? > > We've seen it with Beaglebone Enhanced [1] and BeagleCore [2] based > devices. Both are based on the AM3358 and mostly compatible with the > Beaglebone Black. > > [1] https://elinux.org/SanCloud_BeagleBoneEnhanced > [2] http://beaglecore.com/products/bcm1str.html Okay, now I see you have a hub on the board. I just reproduced the console lockup after added a hub in my setup. I will find some time to debug this. FYI, there was a similar issue in a few years ago, which was that the hub routine never got called during the storm then the device disconnect event never got populated from the hub driver. I am wondering if this is the same issue pops up again... Regards, -Bin.