netdev - Re: [PATCH net-next] amd-xgbe: Reset running devices after resume from hibernate

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Message-Id: <20160829.002644.1483422041950202286.davem@davemloft.net>
Date:   Mon, 29 Aug 2016 00:26:44 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     james.morse@....com
Cc:     netdev@...r.kernel.org, thomas.lendacky@....com
Subject: Re: [PATCH net-next] amd-xgbe: Reset running devices after resume
 from hibernate

From: James Morse <james.morse@....com>
Date: Fri, 26 Aug 2016 09:21:23 +0100

> After resume from hibernate on arm64, any amd-xgbe devices that were
> running when we hibernated are reported as down, even when it is not.
> 
> Re-plugging the cables does not cause the interface to come back, the
> link must be marked as down then up via 'ip set link' using the serial
> console.
> 
> This happens because the device has been power-cycled and possibly
> re-initialised by firmware, whereas the driver's memory structures have
> been restored from the hibernate image and the two do not agree.
> 
> Schedule a restart of the device after powerup in case the world changed
> while we were asleep.
> 
> Signed-off-by: James Morse <james.morse@....com>

Applied.