netdev - Re: [PATCH] drivers/net: Call netif_carrier

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Message-ID: <1297931060.9613.2.camel@ceranb.intra.cera.cz>
Date:	Thu, 17 Feb 2011 09:24:20 +0100
From:	Ivan Vecera <ivecera@...hat.com>
To:	Francois Romieu <romieu@...zoreil.com>, davem@...emloft.net
Cc:	netdev@...r.kernel.org, aabdulla@...dia.com,
	Ben Hutchings <ben@...adent.org.uk>
Subject: Re: [PATCH] drivers/net: Call netif_carrier_off at the end of the
 probe

On Tue, 2011-02-15 at 13:01 -0500, Ivan Vecera wrote:
> ----- Original Message -----
> > On Tue, 2011-02-15 at 16:22 +0100, Francois Romieu wrote:
> > > Stated this way it sounds like a core dev layer issue.
> > 
> > ...
> > > I am not completely sure after reading some history. Namely:
> > > - (37e8273cd30592d3a82bcb70cbb1bdc4eaeb6b71 ?)
> > > - c276e098d3ee33059b4a1c747354226cec58487c
> > > - 22604c866889c4b2e12b73cbf1683bda1b72a313
> > > - b47300168e770b60ab96c8924854c3b0eb4260eb
> > >
> > > I am confused.
> > 
> > Drivers that can report carrier state should do so initially some time
> > between registering a device and bringing it up (either in the bus
> > probe
> > function or the ndo_open function). It generally seems to be safe to
> > assume that the link is down initially, and then to rely on
> > notifications from the hardware. However, that does depend on the
> > behaviour of the hardware.
> > 
> Yes,that's true... forcedeth and r8169 are the drivers that detect link
> state when device is opened and call netif_carrier_on(off) appropriately.
> 
> Ivan
Dave, Francois, is it acceptable?

Ivan

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