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SubjectRe: [PATCH] staging: r8188eu: combine nested if statements into one
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On 6/24/22 05:30, Chang Yu wrote:
> On Thu, Jun 23, 2022 at 12:05:40PM +0000, David Laight wrote:
>> ...
>>> Seems to work. But the rules which operation is done first && or == are
>>> not too easy.
>>
>> They are the way around you want them to be.
>> == generates a truth value.
>> && and || compare truth values,
>>
>> The only 'wrong' operator priorities are & and |.
>> The short-circuiting && and || weren't in the very early
>> versions of C - the bitwise & and | were used.
>> When K&R added && and || they left the priorities of & an | alone.
>> I they they've later said they should have bitten the bullet
>> and changed the priorities and all the existing C code
>>
>>> I would prefer to have:
>>>
>>> if (padapter && (pfree_recv_queue == free_recv_queue))
>>>
>>> So it is very easy to read what is evaluated first.
>>
>> That just starts adding too many () and makes more complex
>> conditionals hard to read.
>>
>> David
>>
>>>
>>> But this is just my opinion and does not have to be right.
>>>
>>> Thanks for your patch.
>>>
>>> Bye Philipp
>>
>> -
>> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
>> Registration No: 1397386 (Wales)
>
> In my humble opinion it just boils down to personal preference in this
> case. The kernel coding style guidlines don't seem to have a definitive
> gold standard regarding this. I will leave the patch as-is for now, but
> if anybody feels strongly that the () needs to be removed please feel
> free to let me know and I'll make the change.

Please consider that the person you want to sign-of for this patch is
most likely Greg K-H. I propose to fix first what he is asking for.

Bye Philipp

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