On Monday 18 April 2016 10:02:57 Ivaylo Dimitrov wrote: > > > On 8.04.2016 23:13, Ivaylo Dimitrov wrote: > >Hi, > > > >On 16.01.2016 12:40, Ivaylo Dimitrov wrote: > >>Hi, > >> > >>On 16.01.2016 00:48, Tony Lindgren wrote: > >>>Hi all, > >>> > >>>Looks like there's some issue with the USB gadgets and configfs. > >>> > ... > > > >(copied from "Re: [PATCH] usb: f_mass_storage: test whether thread is > >running before starting another" thread) > > > >Yet another problem with USB gadget, this time with f_acm - if there is > >an open /dev/ttyGSn device, it is impossible to reboot/power down the > >device. > > > >My investigation shown that there is a process(pnatd) that opens > >/dev/ttyGSn devices, so gserial_free_port() hangs on > >wait_event(port->close_wait, gs_closed(port)); if I do "cd > >/sys/bus/platform/drivers/musb-hdrc && echo musb-hdrc.0.auto > unbind". > > > >Unfortunately I don't have serial debug port connector on my N900, so I > >can't capture logs after the reboot command, however, I suspect it hangs > >on the same place as with unbind. > > > >That looks weird, as one would expect that close() is called when the > >kernel kills user processes on reboot/powerdown. > > > >Ivo > > > Anyone? PING? -- Pali Rohár pali.rohar@xxxxxxxxx -- 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
