Date: Wed, 29 Sep 2010 11:34:09 +0100 (BST) From: Anton Shterenlikht <mexas@bristol.ac.uk> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org, Anton Shterenlikht <mexas@bristol.ac.uk> Subject: Re: amd64 panic: lock (sleep mutex) ral0 not locked @ /usr/src/sys/dev/ral/rt2560.c:2012 Message-ID: <alpine.BSF.2.00.1009291128290.66572@mech-cluster241.men.bris.ac.uk> In-Reply-To: <201009271120.36337.jhb@freebsd.org> References: <20100925195334.GA58609@mech-cluster241.men.bris.ac.uk> <201009271120.36337.jhb@freebsd.org>
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On Mon, 27 Sep 2010, John Baldwin wrote:
> On Saturday, September 25, 2010 3:53:34 pm Anton Shterenlikht wrote:
>> On amd64 r213168 I've a ral(4) CardBus
>> wireless device of obscure origin.
>> It is identified as
>>
>> db> bt
>> Tracing pid 0 tid 100068 td 0xffffff0001b59440
>> kbd_enter() at kbd_enter+0x3d
>> panic() at panic+0x17b
>> witness_unlock() at witness_unlock+0x297
>> _mtx_unlock_flags() at _mtx_unlock_flags+0x7e
>> rt2560_ioctl() at rt2560_ioctl+0xbf
>> taskqueue_run() at taskqueue_run+0x63
>> taskqueue_thread_loop() at taskqueue_thread_loop+0x54
>> fork_exit() at fork_exit+0x12a
>> fork_trampoline() at fork_trampoline+0xe
>> --- trap 0, rip 0, rsp=0xffffff80b2d41cf0, rbp = 0 ---
>
> This will likely fix your panic, but I think the card is likely to still not
> work:
>
> Index: rt2560.c
> ===================================================================
> --- rt2560.c (revision 212900)
> +++ rt2560.c (working copy)
> @@ -2667,8 +2667,7 @@
> RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY);
>
> if (rt2560_bbp_init(sc) != 0) {
> - rt2560_stop(sc);
> - RAL_UNLOCK(sc);
> + rt2560_stop_locked(sc);
> return;
> }
>
John,
You are right, the panic has got away, but
the card doesn't seem to work. After
issuing "ifconfig wlan0 up scan" I just
get lots of
ral0: could not read from BBP
ral0: timeout waiting for BBP
messages on the console.
Shall I give up on this particular device?
many thanks
anton
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