netdev - Re: [patch 10/21] driver/net/skge.c: restart the interface when it's options or pauseparam is set

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Message-ID: <20080923164545.6a6bf6c8@extreme>
Date:	Tue, 23 Sep 2008 16:45:45 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	akpm@...ux-foundation.org
Cc:	jeff@...zik.org, netdev@...r.kernel.org, akpm@...ux-foundation.org,
	Xiaoming.Zhang@...ilience.com
Subject: Re: [patch 10/21] driver/net/skge.c: restart the interface when
 it's options or pauseparam is set

On Mon, 22 Sep 2008 14:52:17 -0700
akpm@...ux-foundation.org wrote:

> From: "Xiaoming.Zhang" <Xiaoming.Zhang@...ilience.com>
> 
> We have an issue of the skge driver: The card won't work when it's options
> are changed.  Here's the hardware info:
> 
> # lspci -v
> 05:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13)
>         Subsystem: Marvell Technology Group Ltd. Marvell RDK-8001
>         Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 16
>         Memory at d042c000 (32-bit, non-prefetchable) [size=16K]
>         I/O ports at d000 [size=256]
>         [virtual] Expansion ROM at 20400000 [disabled] [size=128K]
>         Capabilities: [48] Power Management version 2
>         Capabilities: [50] Vital Product Data
> 
> The happens in both Linux-2.6.26(skge version 1.23) and RHEL5.2(skge
> version 1.6).
> 
> For example, at first it is set to "speed 1000 duplex full auto-neg on" and
> it works, then run
> 
>        ethtool -s <ethx> autoneg off
> or     ethtool -s <ethx> speed 100 duplex full autoneg off
> 
> Then it will stop working. After that if we restart the interface:
> 
> 	ifconifg <ethx> down
> 	ifconfig <ethx> up
> 
> It will work again. And `ethtool -A' has the same issue.
> 
> So we think after setting the options, the interface should be restarted. 
> 
> Signed-off-by: Zhang Xiaoming <xiaoming.zhang@...ilience.com>
> Cc: Stephen Hemminger <shemminger@...tta.com>
> Cc: Jeff Garzik <jeff@...zik.org>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>

Acked-by: Stephen Hemminger <shemminger@...tta.com>

Looks correct, don't have time or hardware setup right now to verify further.
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