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Date: Tue, 20 May 2014 14:13:01 +0200
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Subject: Re: if_rsu hardware causes a kernel panic on removal..
From: Idwer Vollering <vidwer@gmail.com>
To: Hans Petter Selasky <hps@selasky.org>
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Cc: hps@bitfrost.no, freebsd-wireless@freebsd.org, freebsd-usb@freebsd.org
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2014-05-20 7:47 GMT+02:00 Hans Petter Selasky <hps@selasky.org>:
> On 05/19/14 23:21, Idwer Vollering wrote:
>>
>> ..while running a kernel that has rsu_debug set to >0.
>>
>> Line 1712: "fault virtual address   = 0xffff804000000000"
>> core0.txt ->
>> http://ra.openbios.org/~idwer/freebsd/fbsd_10-stable_rsu_panic_core_0.txt
>>
>> HTH,
>
>
> Hi,
>
> Does this patch make any difference?

Yes, this solves the panic.

>
> --HPS
>
> === ./if_rsu.c
> ==================================================================
> --- ./if_rsu.c  (revision 266400)
> +++ ./if_rsu.c  (local)
> @@ -423,8 +423,6 @@
>         struct ifnet *ifp = sc->sc_ifp;
>         struct ieee80211com *ic = ifp->if_l2com;
>
> -       if (!device_is_attached(self))
> -               return (0);
>         rsu_stop(ifp, 1);
>         usbd_transfer_unsetup(sc->sc_xfer, RSU_N_TRANSFER);
>         ieee80211_ifdetach(ic);
>