linux-kernel - Re: [PATCH net-next 4/7] net: ipa: ipa

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Message-ID: <6e0c08a0-aebd-83b2-26b5-98f7d46d6b2b@linaro.org>
Date:   Sun, 11 Apr 2021 08:42:15 -0500
From:   Alex Elder <elder@...aro.org>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     davem@...emloft.net, kuba@...nel.org, bjorn.andersson@...aro.org,
        evgreen@...omium.org, cpratapa@...eaurora.org,
        subashab@...eaurora.org, elder@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 4/7] net: ipa: ipa_stop() does not return an
 error

On 4/11/21 8:28 AM, Leon Romanovsky wrote:
>> I think *not* checking an available return value is questionable
>> practice.  I'd really rather have a build option for a
>> "__need_not_check" tag and have "must_check" be the default.
> __need_not_check == void ???

I'm not sure I understand your statement here, but...

My point is, I'd rather have things like printk() and
strscpy() be marked with (an imaginary) __need_not_check,
than the way things are, with only certain functions being
marked __must_check.

In my view, if a function returns a value, all callers
of that function ought to be checking it.  If the return
value is not necessary it should be a void function if
possible.

I don't expect the world to change, but I just think the
default should be "must check" rather than "check optional".

					-Alex