[PATCH] drm: drm_printer: add __printf validation

[Joe Perches]

On Mon, 2017-02-20 at 12:17 +0000, Eric Engestrom wrote:
> On Wednesday, 2017-02-15 15:33:18 -0800, Joe Perches wrote:
> > drm_printf does not currently use the compiler to verify
> > format and arguments.  Make it do so.
> > 
> > Miscellanea:
> > 
> > o Add appropriate #include files for __printf and struct va_format
> > o Convert dev_printk to dev_info
> 
> I think these unrelated changes should be in 4 patches:
> 1 - add annotation to check the format string against the arguments
>     (linux/compiler.h should be added here)
> 2 - add missing linux/printk.h header for struct va_format
>     Note that I think a forward declaration is more appropriate here, as
>     we only use pointers to this struct in this file, we never try to
>     look inside. On the other hand:
> 3 - drm_print.c needs the header in drm_printf(), but as a separate
>     patch
> 4 - convert dev_printk to dev_info (you need to include linux/device.h
>     there)

I am not a big fan of making trivial
patches into a series.

> You can add my r-b on all four patches when you send them to the list :)

If you want to break it up, go ahead.