netdev - Re: [PATCH] phy: mdio_bus: Check ENOTSUPP instead of ENOSYS in mdiobus_register

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Message-ID: <99a8ea54-9a27-9e0a-9aaa-8aeef7feabe2@gmail.com>
Date:   Tue, 19 Nov 2019 10:04:53 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Michal Simek <michal.simek@...inx.com>,
        linux-kernel@...r.kernel.org, monstr@...str.eu, git@...inx.com
Cc:     Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH] phy: mdio_bus: Check ENOTSUPP instead of ENOSYS in
 mdiobus_register_reset

On 11/19/19 5:27 AM, Michal Simek wrote:
> Origin patch was using ENOTSUPP instead of ENOSYS. Silently changing error
> value ends up in an access to bad area on Microblaze with axi ethernet
> driver.
> 
> Fixes: 1d4639567d97 ("mdio_bus: Fix PTR_ERR applied after initialization to constant")
> Signed-off-by: Michal Simek <michal.simek@...inx.com>

This has been fixed in the "net" tree already:

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=075e238d12c21c8bde700d21fb48be7a3aa80194
-- 
Florian