Re: [Xen-devel] [PATCH 0/2] Remove support for deprecated %pf and %pF in vsprintf

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Sun, Mar 24, 2019 at 11:10:08PM +0200, Sakari Ailus wrote:
> On Fri, Mar 22, 2019 at 07:05:50PM +0200, Andy Shevchenko wrote:
> > On Fri, Mar 22, 2019 at 03:53:50PM +0200, Sakari Ailus wrote:
> > 
> > > Porting a patch
> > > forward should have no issues either as checkpatch.pl has been complaining
> > > of the use of %pf and %pF for a while now.
> > 
> > And that's exactly the reason why I think instead of removing warning on
> > checkpatch, it makes sense to convert to an error for a while. People are
> > tending read documentation on internet and thus might have outdated one. And
> > yes, the compiler doesn't tell a thing about it.
> > 
> > P.S. Though, if majority of people will tell that I'm wrong, then it's okay 
> > to
> > remove.
> 
> I wonder if you wrote this before seeing my other patchset.

Yes, I wrote it before seeing another series.

> What I think could be done is to warn of plain %pf (without following "w")
> in checkpatch.pl, and %pf that is not followed by "w" in the kernel.
> Although we didn't have such checks to begin with. The case is still a
> little bit different as %pf used to be a valid conversion specifier whereas
> %pO likely has never existed.
> 
> So, how about adding such checks in the other set? I can retain %p[fF] check
> here, too, if you like.

Consistency tells me that the warning->error transformation in checkpatch.pl
belongs this series.


-- 
With Best Regards,
Andy Shevchenko



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