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SubjectRe: ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040
On 03/19/2012 11:32 PM, Mohammed Shafi wrote:
> On Tue, Mar 20, 2012 at 11:57 AM, Justin P. Mattock
> <justinmattock@gmail.com> wrote:
>> On 03/19/2012 11:19 PM, Mohammed Shafi wrote:
>>>>
>>>> (gdb) list *ath9k_tx+start+0x284
>>>> No symbol "start" in current context.
>>>
>>>
>>> hey, pls try l *(ath9k_tx_start+0x284), yesterday i did the same in
>>> the latest wireless testing tree it pointed to line 1929 of xmit.c
>>>
>>> sc->tx.seq_no +=0x10;
>>>
>>> also did few suspend/resume in my machine, nothing interesting happened
>>>
>>>>
>>>> before receiving the email to do the above code with gdb I had cleaned
>>>> the
>>>> tree out with git clean -fx so rebuilding might have misalighned
>>>> things(but
>>>> could be wrong)..
>>>>
>>>
>>>
>>>
>>
>>
>> seems gdb is not working with that code but works if I remove _start.
>> (maybe -next took this out or something)
>>
>> (gdb) l *(ath9k_tx_start+0x284)
>> No symbol "ath9k_tx_start" in current context.
>
> sorry its
> l *(ath_tx_start+0x284)
>
>> (gdb) l *(ath9k_tx+0x284)
>> 0x4854 is in ath_paprd_activate (drivers/net/wireless/ath/ath9k/main.c:395).
>> 390 continue;
>> 391
>> 392 ar9003_paprd_populate_single_table(ah, caldata,
>> chain);
>> 393 }
>> 394
>> 395 ar9003_paprd_enable(ah, true);
>> 396 ath9k_ps_restore(sc);
>> 397 }
>> 398
>> 399 static bool ath_paprd_send_frame(struct ath_softc *sc, struct
>> sk_buff *skb, int chain)
>>
>> right now I am running next, will wait for the RX DMA to get a clean trace,
>> then will look to see.. as for the other issue I just rebooted and hit this
>> during bootup.
>>
>> Justin P. Mattock
>
>
>

yeah this works:

eading symbols from
/home/kernel/linux-next/drivers/net/wireless/ath/ath9k/ath9k.o...done.
(gdb) l *(ath_tx_start+0x284)
0xcad4 is in ath_tx_start (drivers/net/wireless/ath/ath9k/xmit.c:1878).
1873 ieee80211_is_data_qos(hdr->frame_control)) {
1874 tidno = ieee80211_get_qos_ctl(hdr)[0] &
1875 IEEE80211_QOS_CTL_TID_MASK;
1876 tid = ATH_AN_2_TID(txctl->an, tidno);
1877
1878 WARN_ON(tid->ac->txq != txctl->txq);
1879 }
1880
1881 if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
1882 /*
(gdb)


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