[PATCH] kernel.h: Add for_each_if()

[Randy Dunlap]

On 07/16/2018 01:11 AM, Andy Shevchenko wrote:
> On Fri, 2018-07-13 at 16:42 -0700, Randy Dunlap wrote:
>> On 07/13/2018 04:37 PM, NeilBrown wrote:
> 
>>
>> coding-style.rst says:
>> Also, use braces when a loop contains more than a single simple
>> statement:
> 
> Independently on a) would we use some macro for condition, or b) fix
> macros against this kind of nested conditions, there is another
> weirdness we would like to avoid, i.e.
> 
> for_each_foo() {
>  ...
> } else {
>  ...
> }
> 
> It is written according to coding style, but too much weird.

Yeah, that's odd.  Looks like else matches the for loop. (!)

> So, summarize this discussion I think we would
> - keep for_each_if() in DRM subsystem alone
> - fix macros which are using positive condition 'if (cond)' by replacing
> with 'if (!cond) {} else' form for sake of robustness.
> 
> Do you agree on that?

Sure, both of those sound good to me.

thanks,
-- 
~Randy