netdev - Re: [PATCH net-next v3 5/5] r8169: support RTL8411

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Date:	Mon, 9 Apr 2012 20:02:29 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	hayeswang <hayeswang@...ltek.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next v3 5/5] r8169: support RTL8411

Francois Romieu <romieu@...zoreil.com> :
> hayeswang <hayeswang@...ltek.com> :
> [...]
> > There is nothing to do for rtl_init_jumbo_ops. It is all right for keeping
> > NULL.
> 
> Ok, I'll add it to the commit message for future reference.
> 
> > Do I need to resend this patch?
> 
> No, I'll give it a short testing and forward to David.

Rx/Tx is ok, WoL + shutdown is ok but runtime power management is not.

I tried net-next + your patches + cff4c16296754888b6fd8c886bc860a888e20257
("r8169: enable napi on resume.", required for RPM or suspend/resume after
regression in da78dbff2e05630921c551dbbc70a4b7981a8fff).

- set a 8402 and a 8411 in the same test box
- ip addr add ... 
- ip link set dev ... up 
- start ping from remote host
- echo auto > /sys/bus/pci/devices/.../power/control
- unplug cable
  - ping stops flowing
  - cat /sys/bus/pci/devices/.../power/runtime_status
    -> "active"
- plug cable
  -> RPM status does not change, no link, no packet, no fun.

I have tried the same with a built-in 8168b (XID 18000000).
-> RPM status changes, link recovers, packets flow.

The 8168b is a bit special, so I swapped the 8411 for a 8102e (XID 04a00000).
It resumed correctly as well.

Any idea ?

-- 
Ueimor

Will code drivers for food.
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