linux-kernel - Re: [RFC net-next PATCH 08/16] net: macb: Clean up macb

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Date:   Mon, 4 Oct 2021 19:09:15 -0400
From:   Sean Anderson <sean.anderson@...o.com>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
Cc:     netdev@...r.kernel.org, "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>
Subject: Re: [RFC net-next PATCH 08/16] net: macb: Clean up macb_validate



On 10/4/21 7:04 PM, Russell King (Oracle) wrote:
> On Mon, Oct 04, 2021 at 03:15:19PM -0400, Sean Anderson wrote:
>> As the number of interfaces grows, the number of if statements grows
>> ever more unweildy. Clean everything up a bit by using a switch
>> statement. No functional change intended.
> 
> This doesn't look right to me.
> 
>> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
>> index e2730b3e1a57..18afa544b623 100644
>> --- a/drivers/net/ethernet/cadence/macb_main.c
>> +++ b/drivers/net/ethernet/cadence/macb_main.c
>> @@ -510,32 +510,55 @@ static void macb_validate(struct phylink_config *config,
>>  			  unsigned long *supported,
>>  			  struct phylink_link_state *state)
>>  {
>> +	bool one = state->interface == PHY_INTERFACE_MODE_NA;
> 
> Shouldn't this be != ?
> 
> Since PHY_INTERFACE_MODE_NA is supposed to return all capabilities.
> 

Ah, yes it should.

--Sean