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List: linux-netdev
Subject: Re: suspend/resume broken on 3.18-rc2
From: Fabio Estevam <festevam () gmail ! com>
Date: 2014-10-31 19:35:41
Message-ID: CAOMZO5AeBSusV=xHgy8KJOb9po9WbS=DkaKXnS8iOpW8t-Y_Fw () mail ! gmail ! com
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Andy,
On Thu, Oct 30, 2014 at 1:11 AM, fugang.duan@freescale.com
<fugang.duan@freescale.com> wrote:
> I tried it yesterday with FEC close, resume cannot back.
> I will try it again.
We have a regression in 3.18-rc1: if I use the imx6sx-sdb.dtb from
3.17.1 then I get:
root@freescale /$ echo enabled > /sys/class/tty/ttymxc0/power/wakeup
root@freescale /$ echo mem > /sys/power/state
[ 13.883094] PM: Syncing filesystems ... done.
[ 13.932184] Freezing user space processes ... (elapsed 0.003 seconds) done.
[ 13.942928] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) d.
[ 14.014823] PM: suspend of devices complete after 54.572 msecs
[ 14.020730] PM: suspend devices took 0.060 seconds
[ 14.035241] PM: late suspend of devices complete after 9.545 msecs
[ 14.050901] PM: noirq suspend of devices complete after 9.383 msecs
[ 14.057626] Disabling non-boot CPUs ...
[ 14.071514] PM: noirq resume of devices complete after 8.338 msecs
[ 14.085645] PM: early resume of devices complete after 6.417 msecs
[ 14.097720] fec 2188000.ethernet eth0: rcv is not +last
[ 14.187491] PM: resume of devices complete after 95.494 msecs
[ 14.199039] PM: resume devices took 0.100 seconds
[ 14.203831] Restarting tasks ... done.
[ 15.892318] fec 2188000.ethernet eth0: rcv is not +last
[ 15.897688] fec 2188000.ethernet eth0: rcv is not +last
[ 15.903010] fec 2188000.ethernet eth0: rcv is not +last
[ 15.908326] fec 2188000.ethernet eth0: rcv is not +last
[ 15.913635] fec 2188000.ethernet eth0: rcv is not +last
[ 15.918945] fec 2188000.ethernet eth0: rcv is not +last
So fec suspend/resume is broken for mx6sx.
Please take a look at it.
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