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SubjectRe: [PATCH 02/10] intel: Remove extern from function prototypes
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From: Ben Hutchings <bhutchings@solarflare.com>
Date: Tue, 24 Sep 2013 23:16:52 +0100

> On Tue, 2013-09-24 at 15:07 -0700, Jeff Kirsher wrote:
>> On Tue, 2013-09-24 at 14:09 -0700, Joe Perches wrote:
>> > There are a mix of function prototypes with and without extern
>> > in the kernel sources. Standardize on not using extern for
>> > function prototypes.
>> >
>> > Function prototypes don't need to be written with extern.
>> > extern is assumed by the compiler. Its use is as unnecessary as
>> > using auto to declare automatic/local variables in a block.
>>
>> So you are able to confirm that all compilers make this assumption
>> correctly? The initial reason for using extern was because not all
>> compilers made the assumption or made it correctly.
>
> You are probably thinking of global variables, where declarations
> without either 'extern' or an initialiser might or might not be treated
> as 'common'. On function declarations, 'extern' really is redundant.

Furthermore, these networking headers include existing generic kernel
headers which already have removed the 'extern' from function
declarations in certain cases.

So I don't think there isn't an issue, and if there is it has existed
already for some time. :-)


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