linux-kernel - Re: [PATCH net-next] net: stmmac: Fix the case when PHY handle is not present

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Message-ID: <6a0db024-312b-746c-4ecc-ab6166c6e409@cogentembedded.com>
Date:   Tue, 25 Jun 2019 13:51:32 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Jose Abreu <Jose.Abreu@...opsys.com>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Cc:     Joao Pinto <Joao.Pinto@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>
Subject: Re: [PATCH net-next] net: stmmac: Fix the case when PHY handle is not
 present

On 25.06.2019 13:29, Sergei Shtylyov wrote:

>> Some DT bindings do not have the PHY handle. Let's fallback to manually
>> discovery in case phylink_of_phy_connect() fails.
>>
>> Reported-by: Katsuhiro Suzuki <katsuhiro@...suster.net>
>> Fixes: 74371272f97f ("net: stmmac: Convert to phylink and remove phylib logic")
>> Signed-off-by: Jose Abreu <joabreu@...opsys.com>
>> Cc: Joao Pinto <jpinto@...opsys.com>
>> Cc: David S. Miller <davem@...emloft.net>
>> Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
>> Cc: Alexandre Torgue <alexandre.torgue@...com>
>> ---
>> Hello Katsuhiro,
>>
>> Can you please test this patch ?
>> ---
>>   drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 7 +++++--
>>   1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 
>> b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>> index a48751989fa6..f4593d2d9d20 100644
>> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>> @@ -950,9 +950,12 @@ static int stmmac_init_phy(struct net_device *dev)
>>       node = priv->plat->phylink_node;
>> -    if (node) {
>> +    if (node)
>>           ret = phylink_of_phy_connect(priv->phylink, node, 0);
>> -    } else {
>> +
>> +    /* Some DT bindings do not set-up the PHY handle. Let's try to
>> +     * manually parse it */
> 
>     The multi-line comments inb the networking code should be formatted like 
> below:
> 
>      /*
>       * bla

    Oops, that was the general comment format, networking code starts without 
the leading empty line:\

	/* bla
>        * bla
>        */
[...]

MBR, Sergei