netdev - Re: SYSFS "errors"

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Message-ID: <20130219101209.GK23197@arwen.pp.htv.fi>
Date:	Tue, 19 Feb 2013 12:12:09 +0200
From:	Felipe Balbi <balbi@...com>
To:	Alexander Stein <alexander.stein@...tec-electronic.com>
CC:	Greg KH <gregkh@...uxfoundation.org>, Felipe Balbi <balbi@...com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	<netdev@...r.kernel.org>
Subject: Re: SYSFS "errors"

+netdev

On Tue, Feb 19, 2013 at 08:41:47AM +0100, Alexander Stein wrote:
> On Monday 18 February 2013 09:49:16, Greg KH wrote:
> > > Invalid argument - /sys/devices/virtual/net/lo/speed
> > > Invalid argument - /sys/devices/virtual/net/lo/duplex
> 
> This is even true for ethernet devices which do not have a link currently or non-ethernet devices (e.g. CAN).
> > LANG=C cat /sys/class/net/enp1s8/speed
> > cat: /sys/class/net/enp1s8/speed: Invalid argument
> > ethtool enp1s8 | grep -A1 Speed
> >         Speed: Unknown!
> >         Duplex: Unknown! (255)
> > LANG=C cat /sys/class/net/can0/speed
> > cat: /sys/class/net/can0/speed: Invalid argument
> 
> Regards,
> Alexander
> 

-- 
balbi

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