netdev - Re: [PATCH] net phy: Check for aneg completion before setting state to PHY

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Date:	Fri, 25 Apr 2014 13:08:45 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	kumaran.4353@...il.com
Cc:	f.fainelli@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH] net phy: Check for aneg completion before setting
 state to PHY_RUNNING

From: Balakumaran Kannan <kumaran.4353@...il.com>
Date: Fri, 25 Apr 2014 11:23:03 +0530

> Here I have a doubt.
>  * Linux network initialization and phy_state_machine runs in separate threads.
>  * And driver doesn't bother about state of phydev.
> Is it correct?
> Doesn't driver need to confirm phydev is ready(PHY_RUNNING) before
> returning to kernel?

The one comment I will make about things here is that the phylib layer
really should not call netif_carrier_on() until the PHY really is
confirmed to be in a state where it will successfully pass traffic.

If it is doing so before auto-negotiation completes and succeeds,
that would be a bug.
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