netdev - Re: [PATCH net-next v2 4/4] net: lan743x: Fix return value check for fixed_phy

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Date: Thu, 17 Aug 2023 21:20:28 +0800
From: Ruan Jinjie <ruanjinjie@...wei.com>
To: Heiner Kallweit <hkallweit1@...il.com>, <rafal@...ecki.pl>,
	<bcm-kernel-feedback-list@...adcom.com>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<opendmb@...il.com>, <florian.fainelli@...adcom.com>,
	<bryan.whitehead@...rochip.com>, <andrew@...n.ch>, <linux@...linux.org.uk>,
	<mdf@...nel.org>, <pgynther@...gle.com>,
	<Pavithra.Sathyanarayanan@...rochip.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next v2 4/4] net: lan743x: Fix return value check for
 fixed_phy_register()



On 2023/8/17 20:43, Heiner Kallweit wrote:
> On 17.08.2023 14:16, Ruan Jinjie wrote:
>> fixed_phy_register() function returns -EPROBE_DEFER, -EINVAL and -EBUSY,
>> etc, but not return -EIO. use PTR_ERR to fix the issue.
>>
>> Fixes: 624864fbff92 ("net: lan743x: add fixed phy support for LAN7431 device")
> 
> This isn't a fix. Returning -EIO isn't wrong. Returning the original errno values
> may be better, but that's an improvement.

Sorry! I'll remove this fix tag in the next version.

> Also combining "net-next" with a Fixes tag is wrong, except the functionality
> was added very recently.

Thank you! I'll keep an eye on these in the future.

> 
>> Signed-off-by: Ruan Jinjie <ruanjinjie@...wei.com>
>> ---
>>  drivers/net/ethernet/microchip/lan743x_main.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
>> index a36f6369f132..c81cdeb4d4e7 100644
>> --- a/drivers/net/ethernet/microchip/lan743x_main.c
>> +++ b/drivers/net/ethernet/microchip/lan743x_main.c
>> @@ -1515,7 +1515,7 @@ static int lan743x_phy_open(struct lan743x_adapter *adapter)
>>  							    &fphy_status, NULL);
>>  				if (IS_ERR(phydev)) {
>>  					netdev_err(netdev, "No PHY/fixed_PHY found\n");
>> -					return -EIO;
>> +					return PTR_ERR(phydev);
>>  				}
>>  			} else {
>>  				goto return_error;
>