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Date: Wed, 21 Mar 2012 22:11:09 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Cc: netdev@...r.kernel.org
Subject: Re: e1000e: Avoid wrong check on TX hang
On Wed, 2012-03-21 at 18:20 +0100, Joakim Tjernlund wrote:
> 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
>
Thanks Joakim, I am aware of the issue/fix. I will submit the fix to
all stable tree's back to 2.6.32. Look for me posting the patch this
weekend.
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