netdev - Re: [PATCH net-next] Revert "net: dsa: bcm_sf2: Defer port enabling to calling port

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Message-Id: <20171001.040250.1687037732691944138.davem@davemloft.net>
Date:   Sun, 01 Oct 2017 04:02:50 +0100 (WEST)
From:   David Miller <davem@...emloft.net>
To:     f.fainelli@...il.com
Cc:     netdev@...r.kernel.org, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] Revert "net: dsa: bcm_sf2: Defer port
 enabling to calling port_enable"

From: Florian Fainelli <f.fainelli@...il.com>
Date: Thu, 28 Sep 2017 11:19:06 -0700

> This reverts commit e85ec74ace29 ("net: dsa: bcm_sf2: Defer port
> enabling to calling port_enable") because this now makes an unbind
> followed by a bind to fail connecting to the ingrated PHY.
> 
> What this patch missed is that we need the PHY to be enabled with
> bcm_sf2_gphy_enable_set() before probing it on the MDIO bus. This is
> correctly done in the ops->setup() function, but by the time
> ops->port_enable() runs, this is too late. Upon unbind we would power
> down the PHY, and so when we would bind again, the PHY would be left
> powered off.
> 
> Fixes: e85ec74ace29 ("net: dsa: bcm_sf2: Defer port enabling to calling port_enable")
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>

Applied.