netdev - Re: [PATCH net-next v1 2/9] net: phy: Add support for polling cable test

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Date:   Sat, 25 Apr 2020 12:49:46 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Andrew Lunn <andrew@...n.ch>, David Miller <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Chris Healy <cphealy@...il.com>,
        Michal Kubecek <mkubecek@...e.cz>
Subject: Re: [PATCH net-next v1 2/9] net: phy: Add support for polling cable
 test

Hi Andrew,

On 4/25/2020 11:06 AM, Andrew Lunn wrote:
> Some PHYs are not capable of generating interrupts when a cable test
> finished. They do however support interrupts for normal operations,
> like link up/down. As such, the PHY state machine would normally not
> poll the PHY.
> 
> Add support for indicating the PHY state machine must poll the PHY
> when performing a cable test.
> 
> Signed-off-by: Andrew Lunn <andrew@...n.ch>

If you started a cable test and killed the ethtool process before the
cable diagnostics are available, the state machine gets stuck in that
state, so we should find a way to propagate the signal all the way to
the PHY library somehow.
-- 
Florian