couldn't configure AR5416

Hello,

I've got a Kernel-2.6.23 running on my Targetsystem (M54455EVB) and compiled "compat-wireless-2.6-old" for that system, for using a D-Link DWA-547 with AR5416 chip.

I successfully loaded all necessary modules (cfg80211.ko mac80211.ko ath9k.ko) and "insmod"-ed them. The ath9k driver responded after loading:
/
ath9k: 0.1
PCI: Enabling device 0000:00:14.0 (0000 -> 0002)
Registered led device: ath9k-phy0:radio
Registered led device: ath9k-phy0:assoc
Registered led device: ath9k-phy0:tx
Registered led device: ath9k-phy0:rx
phy0: Atheros 5416: mem=0xa0000000, irq=67/

which seams like it works.
with "ifconfig wlan0 up" I can bring the system up and can check it with "ifconfig wlan0" /
wlan0 Link encap:Ethernet HWaddr 00:19:5B:43:F5:ED
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wmaster0 Link encap:UNSPEC HWaddr
00-19-5B-43-F5-ED-80-1D-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)/

additionally I installed the actual "wireless tools for Linux"-Package in version 29 from
http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html to be compatible with the new stack from compat-wireless-2.6-old.
But trying to configure the device creates the following Kernel-error-message:
/
iwconfig wlan0 essid wireless
/ # WARNING: at /home/stefan/00_Targetsourcen/compat-wireless-2.6-old/net/mac80211/tx.c:1264 ieee80211_tx() Stack from cf5a1ea0:

      <0> cf5a1eb0<0> cf968691<0> d006d1d6<0> d007720d<0> d0077283<0> 
000004f0<0> d00756b4<0> 00000000
      <0> c002c8e8(printk+0x0/0x1e)<0> c01ab8ec(kfree_skb+0x0/0x26)<0> 
c01ba90c(net_ratelimit+0x0/0x18)<0> c0025258(dump_stack+0x0/0x16)<0> cf58edc0<0> cf58edc0<0> cf86e000<0> c01b0d1e(dev_hard_start_xmit+0x0/0x212)
      <0> c01acf58(skb_segment+0x106/0x55e)<0> edc0cf1b<0> e000cf96<0> 
8180cf1b<0> e3800000<0> 00000000<0> 0000cf96<0> 9a2a0000
      <0> 00000000<0> 00000000<0> 00406c65<0> 00000000<0> 
c01bd14e(__qdisc_run+0x4a/0x156)<0> cf58edc0<0> cf86e000<0> 00000000
      <0> c002c8e8(printk+0x0/0x1e)<0> cfe5687c<0> 
c0047158(__print_symbol+0x0/0x32)<0> cf86e000<0> cf58edc0<0> cf1be000<0> d0062726<0> c01b322c(dev_queue_xmit+0x202/0x252)
      <0> cf86e000<0> cfe566c0<0> cf968180<0> cf968040<0> d006285e<0> 
cf58edc0<0> cf58edc0<0> 00000000
Call Trace:
      <0> [<c0038c08>]<0> [<c0038b7e>]<0> [<c003c08c>]<0> [<c02248a0>]
      <0> [<c003bccc>]<0> [<c003c126>]<0> [<c00390fa>]<0> [<c0039736>]
      <0> [<c0224ce2>]<0> [<c003bccc>]<0> [<c003906e>]<0> [<c0026ec8>]
      <0> [<c00216fa>]<0> [<c003c22e>]<0> [<c003bd34>]<0> [<c003bcda>]
      <0> [<c02248a0>]<0> [<c0021734>]/

Moreover even displaying the cardsetup with "iwconfig wlan0" or displaying the accessable networks with "iwlist scan" throws the errormessage "Illegal instruction". I grep-ed for that expression in sources of "wireless tools for linux", compat-wirless-2.6-old and kernel-sources but couldn't find it ... could this string be sent by the card?

I looked up the /compat-wireless-2.6-old/net/mac80211/tx.c:1264 and found the following:

Line:
1250 * possible to have happened.

                    */
                   if (!__netif_subqueue_stopped(local->mdev, queue)) {
           #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22))
                       clear_bit(IEEE80211_LINK_STATE_PENDING,
1255               &local->state[queue]);
           #else
                       clear_bit(queue, local->queues_pending);
           #endif
                       retries++;

1260 /*
* Driver bug, it's rejecting packets but
* not stopping queues.
*/
1264 if (WARN_ON_ONCE(retries > 5))

                           goto drop;
                       goto retry;
                   }
                   store->skb = skb;
                   store->extra_frag = tx.extra_frag;
                   store->num_extra_frag = tx.num_extra_frag;
                   store->last_frag_rate_idx = tx.last_frag_rate_idx;
                   store->last_frag_rate_ctrl_probe =
                       !!(tx.flags & IEEE80211_TX_PROBE_LAST_FRAG);
               }
            out:
               rcu_read_unlock();
               return 0;
  
            drop:

1280 if (skb)

/Has anybody an idea whats going wrong?
Thanks a lot for your help and time

regards
Stefan Hittmeyer

compat-wireless-old just got a new update, give that a shot. But also be aware that compat-wireless-old is just that -- old so resources are dedicated more to >= 2.6.27 right now; at least for ath9k.

Luis