netdev - Re: [PATCH net] net: phy: consider PHY_IGNORE_INTERRUPT in phy_start_aneg

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Message-ID: <013532d7-ed33-354b-81d9-f69ad534ebe3@gmail.com>
Date:   Fri, 20 Jul 2018 02:36:21 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net] net: phy: consider PHY_IGNORE_INTERRUPT in
 phy_start_aneg_priv



On 07/18/2018 11:15 PM, Heiner Kallweit wrote:
> The situation described in the comment can occur also with
> PHY_IGNORE_INTERRUPT, therefore change the condition to include it.

Yes indeed! You might want to locate the offending commit to provide a
fixes tag so this could be backported to stable trees.

Also, for net-next, we may want to introduce a helper which checks for
phydev->irq != PHY_POLL that we can use consistently as a way to tell
that the conditions applies to either PHY_IGNORE_INTERRUPT or
phydev->irq is valid?

> 
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
> ---
>  drivers/net/phy/phy.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
> index d2baedc4..914fe8e6 100644
> --- a/drivers/net/phy/phy.c
> +++ b/drivers/net/phy/phy.c
> @@ -519,7 +519,7 @@ static int phy_start_aneg_priv(struct phy_device *phydev, bool sync)
>  	 * negotiation may already be done and aneg interrupt may not be
>  	 * generated.
>  	 */
> -	if (phy_interrupt_is_valid(phydev) && (phydev->state == PHY_AN)) {
> +	if (phydev->irq != PHY_POLL && phydev->state == PHY_AN) {
>  		err = phy_aneg_done(phydev);
>  		if (err > 0) {
>  			trigger = true;
> 

-- 
Florian