netdev - Re: [PATCH net-next 1/2] net: phy: remove parameter new_link from phy_mac

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Message-ID: <531f1c67-6791-4ab8-ea24-06951e8821f7@gmail.com>
Date:   Wed, 10 Jan 2018 12:13:59 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        David Miller <davem@...emloft.net>,
        Doug Berger <opendmb@...il.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 1/2] net: phy: remove parameter new_link from
 phy_mac_interrupt()

On 01/10/2018 12:11 PM, Heiner Kallweit wrote:
> I see two issues with parameter new_link:
> 
> 1. It's not needed. See also phy_interrupt(), works w/o this parameter.
>    phy_mac_interrupt sets the state to PHY_CHANGELINK and triggers the
>    state machine which then calls phy_read_status. And phy_read_status
>    updates the link state.
> 
> 2. phy_mac_interrupt is used in interrupt context and getting the link
>    state may sleep (at least when having to access the PHY registers
>    via MDIO bus).
> 
> So let's remove it.

This looks fine in premise, but you really need to combine patch 1 and
to 2 to avoid a build failure.
-- 
Florian