Re: New warnings with gcc-11

On Tue, 27 Apr 2021, Linus Torvalds torvalds@linux-foundation.org wrote:

I've updated to Fedora 34 on one of my machines, and it causes a lot of i915 warnings like

drivers/gpu/drm/i915/intel_pm.c: In function ‘ilk_setup_wm_latency’: drivers/gpu/drm/i915/intel_pm.c:3059:9: note: referencing argument 3 of type ‘const u16 *’ {aka ‘const short unsigned int *’} drivers/gpu/drm/i915/intel_pm.c:2994:13: note: in a call to function ‘intel_print_wm_latency’

and the reason is that gcc now seems to look at the argument array size more, and notices that

Arnd Bergmann reported some of these a while back. I think we have some of them fixed in our -next already, but not all. Thanks for the reminder.

BR, Jani.