netdev - Re: [PATCH net-next 1/2] net: phy: replace PHY_HAS_INTERRUPT with a check for config_intr and ack

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Message-ID: <f4fd4bd9-45ae-fc4e-9f7a-a3d3e1debb9e@gmail.com>
Date:   Thu, 8 Nov 2018 23:40:38 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Florian Fainelli <f.fainelli@...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-next 1/2] net: phy: replace PHY_HAS_INTERRUPT with a
 check for config_intr and ack_interrupt

On 08.11.2018 23:33, Florian Fainelli wrote:
> On 11/8/18 1:55 PM, Heiner Kallweit wrote:
>> Flag PHY_HAS_INTERRUPT is used only here for this small check. I think
>> using interrupts isn't possible if a driver defines neither
>> config_intr nor ack_interrupts callback. So we can replace checking
>> flag PHY_HAS_INTERRUPT with checking for these callbacks.
>>
>> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
>> ---
>>  drivers/net/phy/phy_device.c | 5 +++--
>>  1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
>> index d165a2c82..33e51b955 100644
>> --- a/drivers/net/phy/phy_device.c
>> +++ b/drivers/net/phy/phy_device.c
>> @@ -2104,8 +2104,9 @@ static int phy_probe(struct device *dev)
>>  	/* Disable the interrupt if the PHY doesn't support it
>>  	 * but the interrupt is still a valid one
>>  	 */
>> -	if (!(phydrv->flags & PHY_HAS_INTERRUPT) &&
>> -	    phy_interrupt_is_valid(phydev))
>> +	 if (!phydrv->config_intr &&
>> +	     !phydrv->ack_interrupt &&
>> +	     phy_interrupt_is_valid(phydev))
>>  		phydev->irq = PHY_POLL;
> 
> I would introduce an inline helper function which checks for
> drv->config_intr and config_ack_interrupt, that way if we ever have to
> introduce an additional function in the future, we just update the
> helper to check for that.
> 
> Other than that, LGTM
> 
OK, will add a helper and remove PHY_HAS_INTERRUPT from all drivers.