Re: [PATCH 1/1] atl1c: fix issue of transmit queue 0 timed out

From: Luis R. Rodriguez
Date: Tue Jun 26 2012 - 14:03:09 EST


On Tue, Jun 26, 2012 at 12:33:06PM -0300, Ren, Cloud wrote:
> From: xiong <xiong@xxxxxxxxxxxxxxxx>
>
> some people report atl1c could cause system hang with following
> kernel trace info:
> ---------------------------------------
> WARNING: at.../net/sched/sch_generic.c:258
> dev_watchdog+0x1db/0x1d0()
> ...
> NETDEV WATCHDOG: eth0 (atl1c): transmit queue 0 timed out
> ...
> ---------------------------------------
> This is caused by netif_stop_queue calling when cable Link is down
> but netif_wake_queue isn't called when cable Link is resume.
>
> Signed-off-by: xiong <xiong@xxxxxxxxxxxxxxxx>
> Signed-off-by: Cloud Ren <cjren@xxxxxxxxxxxxxxxx>

If this fixes a system hang then this could be a stable
fix -- that is, this should be propagated to older stable
kernels, no?

If so then please add to the commit log a line like this:

Cc: stable@xxxxxxxxxxxxxxx [3.4]

Note: this is for the commit log! Right above the line below
that has "---"

Luis
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