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Date:   Mon, 20 Jan 2020 10:08:44 +0100 (CET)
From:   David Miller <>
Subject: Re: [PATCH net-next] net: phy: don't crash in phy_read/_write_mmd
 without a PHY driver

From: Vladimir Oltean <>
Date: Thu, 16 Jan 2020 19:46:28 +0200

> From: Alex Marginean <>
> The APIs can be used by Ethernet drivers without actually loading a PHY
> driver. This may become more widespread in the future with 802.3z
> compatible MAC PCS devices being locally driven by the MAC driver when
> configuring for a PHY mode with in-band negotiation.
> Check that drv is not NULL before reading from it.
> Signed-off-by: Alex Marginean <>

Applied, thank you.

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