linux-kernel - Re: [PATCH] net/dsa: remove unused macros to tame gcc warning

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Message-ID: <b3274bdb-5680-0c24-9800-8c025bfa119a@linux.alibaba.com>
Date:   Sat, 7 Nov 2020 20:54:53 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net/dsa: remove unused macros to tame gcc warning



在 2020/11/7 上午12:39, Florian Fainelli 写道:
>> Hi Alex
>>
>> It is good to remember that there are multiple readers of source
>> files. There is the compiler which generates code from it, and there
>> is the human trying to understand what is going on, what the hardware
>> can do, how we could maybe extend the code in the future to make use
>> of bits are currently don't, etc.
>>
>> The compiler has no use of these macros, at the moment. But i as a
>> human do. It is valuable documentation, given that there is no open
>> datasheet for this hardware.
>>
>> I would say these warnings are bogus, and the code should be left
>> alone.
> Agreed, these definitions are intended to document what the hardware
> does. These warnings are getting too far.
> -- 

Thanks for all comments! I agree these info are much meaningful.
Is there other way to tame the gcc warning? like put them into a .h file
or covered by comments?

Thanks
Alex