On Wed, Dec 18, 2024 at 10:36:00PM +0800, Huacai Chen wrote: > Hi, Tiezhu, > > On Tue, Dec 17, 2024 at 9:50 AM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote: > > > > When compiling with Clang on LoongArch, there exists the following objtool > > warning in drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.o: > > > > dc_fixpt_recip() falls through to next function dc_fixpt_sinc() > > > > This is because dc_fixpt_from_fraction() is inlined in dc_fixpt_recip() > > by Clang, given dc_fixpt_from_fraction() is not a simple function, just > > mark it noinline to avoid the above issue. > I don't know whether drm maintainers can accept this, because it looks > like a workaround. Yes, uninline this function "solve" a problem and > seems reasonable in this case because the function is "not simple", > but from another point of view, you may hide a type of bug. Agreed, it sounds like there's definitely a bug which this patch is papering over. -- Josh
