linux-kernel - Re: [PATCH net] net: dp83869: Reset return variable if PHY strap is read

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Date:   Sat, 06 Jun 2020 15:54:30 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     dmurphy@...com
Cc:     andrew@...n.ch, f.fainelli@...il.com, hkallweit1@...il.com,
        kuba@...nel.org, linux@...linux.org.uk, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: dp83869: Reset return variable if PHY strap
 is read

From: Dan Murphy <dmurphy@...com>
Date: Fri, 5 Jun 2020 15:51:03 -0500

> When the PHY's strap register is read to determine if lane swapping is
> needed the phy_read_mmd returns the value back into the ret variable.
> 
> If the call to read the strap fails the failed value is returned.  If
> the call to read the strap is successful then ret is possibly set to a
> non-zero positive number. Without reseting the ret value to 0 this will
> cause the parse DT function to return a failure.
> 
> Fixes: c4566aec6e808 ("net: phy: dp83869: Update port-mirroring to read straps")
> Signed-off-by: Dan Murphy <dmurphy@...com>

Applied, thank you.