Ben Greear <[EMAIL PROTECTED]> :
[...]
> I seem to be able to trigger this within about 1 minute on a
> particular 2.6.18.2 system with some 8139too devices, so if someone
> has a patch that could be tested, I'll gladly test it. For
> whatever reason, I haven't hit this problem on 2.6.20 yet, but
> that could easily be dumb luck, and I haven't been running .20
> very much.
Bandaid below. It is not complete if your device hits the tx_watchdog
hard but it should help.
I'll return in 24h.
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c
index 35ad5cf..cbee350 100644
--- a/drivers/net/8139too.c
+++ b/drivers/net/8139too.c
@@ -1603,18 +1603,20 @@ static void rtl8139_thread (struct work_struct *work)
struct net_device *dev = tp->mii.dev;
unsigned long thr_delay = next_tick;
+ rtnl_lock();
+
+ if (!netif_running(dev))
+ goto unlock;
+
if (tp->watchdog_fired) {
tp->watchdog_fired = 0;
rtl8139_tx_timeout_task(work);
- } else if (rtnl_trylock()) {
- rtl8139_thread_iter (dev, tp, tp->mmio_addr);
- rtnl_unlock ();
- } else {
- /* unlikely race. mitigate with fast poll. */
- thr_delay = HZ / 2;
- }
+ } else
+ rtl8139_thread_iter(dev, tp, tp->mmio_addr);
schedule_delayed_work(&tp->thread, thr_delay);
+unlock:
+ rtnl_unlock ();
}
static void rtl8139_start_thread(struct rtl8139_private *tp)
@@ -1626,19 +1628,11 @@ static void rtl8139_start_thread(struct rtl8139_private
*tp)
return;
tp->have_thread = 1;
+ tp->watchdog_fired = 0;
schedule_delayed_work(&tp->thread, next_tick);
}
-static void rtl8139_stop_thread(struct rtl8139_private *tp)
-{
- if (tp->have_thread) {
- cancel_rearming_delayed_work(&tp->thread);
- tp->have_thread = 0;
- } else
- flush_scheduled_work();
-}
-
static inline void rtl8139_tx_clear (struct rtl8139_private *tp)
{
tp->cur_tx = 0;
@@ -2233,8 +2227,6 @@ static int rtl8139_close (struct net_device *dev)
netif_stop_queue (dev);
- rtl8139_stop_thread(tp);
-
if (netif_msg_ifdown(tp))
printk(KERN_DEBUG "%s: Shutting down ethercard, status was
0x%4.4x.\n",
dev->name, RTL_R16 (IntrStatus));
-
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