[Bug 30476] e1000_clean_tx_irq: Detected Tx Unit Hang

[Christian Leber]

Public bug reported:
https://launchpad.net/malone/bugs/30476

Affects: linux-source-2.6.15 linux-image-2.6.15-14-386 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
When using a e1000 card in a gigabit ethernet (with 100mbit this problem
does exist) I get this error:

[4294726.019000] e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang
[4294726.019000]   TDH                  <cb>
[4294726.019000]   TDT                  <cb>
[4294726.019000]   next_to_use          <cb>
[4294726.019000]   next_to_clean        <df>
[4294726.019000] buffer_info[next_to_clean]
[4294726.019000]   dma                  <1aa25cce>
[4294726.019000]   time_stamp           <fffc40e7>
[4294726.019000]   next_to_watch        <df>
[4294726.019000]   jiffies              <fffc5183>
[4294726.019000]   next_to_watch.status <0>

and the transfer stalls, i think the problem is related to this thread:
http://seclists.org/lists/linux-kernel/2006/Jan/index.html#7018


Christian Leber