Panic when detaching Vodafone 3G card

Stefan Lambrev stefan.lambrev at
Tue Sep 9 16:12:26 UTC 2008


Bruce M Simpson wrote:
> Hi,
> I just acquired one of these cards, it attaches as a USB cardbus device.
I have similar problems with Huawei E630, and not just me
Panics are fixed with usb4bsd ... :)
I didn't find time to get the card actually working and receive a lot of 
ubsa_cfg_request: device request failed, err=USBD_ERR_STALLED (ignored)
> This is just to say that I can reproduce the problem described here:
> The driver support was originally committed here:
> ...the ubsa driver attaches to the virtual modem port.
> If I unplug it, the kernel panics.
> The panic is in kobj_delete() (a null pointer reference) and it's on 
> the usb detach path. Unfortunately I wasn't able to get a backtrace 
> this time around.
> PS Does anybody know if ubsa will be ported to the new USB driver 
> framework?
I think it is because ubsa works with usb4bsd and it's basically the same?
> cheers
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Best Wishes,
Stefan Lambrev
ICQ# 24134177

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