Accessing usb serial adapter HL-340 panics system

[Thomas E. Spanjaard]

Jan Lentfer wrote:
> when accessing my usb serial adapter (HL-340 is printed on the
> connector) with minicom or cu I get a reproducable panic:
> 
> #9  0xc08a02e9 in uchcom_param (arg=0x0, portno=-1, t=0xe0fa4a34) at
> /home/lentferj/repo/src/sys/dev/usbmisc/uchcom/uchcom.c:946

Looks like a null pointer dereference of arg in that function.
-- 
	Thomas E. Spanjaard
	tgen at netphreax.net
	tgen at deepbone.net

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