Re: RPI usb can get stuck

[Iain Hibbert <plunky%ogmig.net@localhost>]

On Thu, 9 Apr 2015, Frank Kardel wrote:

> Using an USB-Serial adapter I experience ucb lockups in 7.99.9.
>
> Device (from dmesg):
> uslsa0 at uhub1 port 3 configuration 1 interface 0
> uslsa0: Silicon Labs ELV USB-WDE1 WetterdatenempfM-CM-$nger, rev 1.10/1.00,
> addr 4
> ucom0 at uslsa0: Silicon Labs CP210x

by chance, I just filed PR 49831 relating to a kernel panic upon closing a
ucom device. I don't know if related as different architecture, different
device :)

> ~.> [stuck here]

but it dies in ucomclose() the same .. does your kernel have DIAGNOSTIC
enabled?

my workaround, was to unplug the USB device instead of closing the device,
which seemed to work properly.

regards,
iain