netdev - Re: [PATCH v2] net: bnxt_ptp: fix compilation error

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Date:   Tue, 29 Mar 2022 05:20:40 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Michael Chan <michael.chan@...adcom.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Netdev <netdev@...r.kernel.org>,
        Pavan Chebbi <pavan.chebbi@...adcom.com>
Subject: Re: [PATCH v2] net: bnxt_ptp: fix compilation error

On 3/28/22 21:46, Andrew Lunn wrote:
>> The call to bnxt_ptp_cfg_pin() after the swith will return -ENOTSUPP for
>> invalid pin IDs. So I did not feel like adding more changes was necessary.
>>
>> We can return an error if you insist, but what should it be ? -EINVAL ?
>> -ENODEV ? -ENOTSUPP ? Given that bnxt_ptp_cfg_pin() return -ENOTSUPP, we
>> could use that code.
> 
> https://elixir.bootlin.com/linux/v5.17.1/source/include/linux/errno.h#L23
> 
> ENOTSUPP is an NFS only error code. It should not be used anywhere
> else. EOPNOTSUPP is the generic error that should be used. However,
> don't replace an ENOTSUPP with an EOPNOTSUPP without considering ABI.

Typo... the current error for invalid pin IDs is EOPNOTSUPP, not ENOTSUPP.
So I reused EOPNOTSUPP in the patch.

> 
>     Andrew


-- 
Damien Le Moal
Western Digital Research