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
(a) intel_print_wm_latency() takes a "const u16 wm[8]" argument
but
(b) most of the arrays passed in tend to look like 'u16 pri_latency[5]'
I think I will make the argument type to intel_print_wm_latency() be just "const u16 wm[]" for now, just to avoid seeing a ton of silly warnings.
I'm not sure if there is a better solution (like making all of those latency arrays be 8 entries in size), so I'm just letting you know about my change in this area in case anybody has a better idea.
Linus