linux-kernel - Re: [PATCH v2 2/3] net: sfp: assume that LOS is not implemented if both LOS normal and inverted is set

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Message-ID: <X/c8xJcwj8Y1t3u4@lunn.ch>
Date:   Thu, 7 Jan 2021 17:54:28 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Pali Rohár <pali@...nel.org>
Cc:     Russell King - ARM Linux admin <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Thomas Schreiber <tschreibe@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Marek Behún <kabel@...nel.org>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] net: sfp: assume that LOS is not implemented if
 both LOS normal and inverted is set

On Wed, Jan 06, 2021 at 04:37:48PM +0100, Pali Rohár wrote:
> From: Russell King <rmk+kernel@...linux.org.uk>
> 
> Some GPON SFP modules (e.g. Ubiquiti U-Fiber Instant) have set both
> SFP_OPTIONS_LOS_INVERTED and SFP_OPTIONS_LOS_NORMAL bits in their EEPROM.
> 
> Such combination of bits is meaningless so assume that LOS signal is not
> implemented.
> 
> This patch fixes link carrier for GPON SFP module Ubiquiti U-Fiber Instant.
> 
> Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
> Signed-off-by: Pali Rohár <pali@...nel.org>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew