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* e1000e: Avoid wrong check on TX hang
@ 2012-03-21 17:20 Joakim Tjernlund
  2012-03-22  5:11 ` Jeff Kirsher
  0 siblings, 1 reply; 2+ messages in thread
From: Joakim Tjernlund @ 2012-03-21 17:20 UTC (permalink / raw)
  To: Jeff Kirsher; +Cc: netdev


I think commit 09357b00255c233705b1cf6d76a8d147340545b8(e1000e: Avoid wrong check on TX hang)
needs to be applied in 3.2.x (and 3.0.x) too.

We have seen this on routers(we got 3):
e1000e 0000:11:00.0: eth9: Detected Hardware Unit Hang:
  TDH                  <a4>
  TDT                  <a7>
  next_to_use          <a7>
  next_to_clean        <a4>
buffer_info[next_to_clean]:
  time_stamp           <1008e849f>
  next_to_watch        <a4>
  jiffies              <1008e85d8>
  next_to_watch.status <0>
MAC Status             <80387>
PHY Status             <792d>
PHY 1000BASE-T Status  <3800>
PHY Extended Status    <3000>
PCI Status             <10>

Applying the above patch on 3.2.12 makes the error go away.

   Jocke

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2012-03-21 17:20 e1000e: Avoid wrong check on TX hang Joakim Tjernlund
2012-03-22  5:11 ` Jeff Kirsher

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