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?
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