This is caused by the new merged commit 39c184a6a9a7 ("intel_idle: Fix the 'preferred_cstates' module parameter"), which removes the variable and function that commit cc6e234b8264 ("intel_idle: Add AlderLake support") depends on. I will send a patch on top to fix this soon. thanks, rui On Thu, 2022-04-28 at 11:00 +1000, Stephen Rothwell wrote: > Hi all, > > After merging the pm tree, today's linux-next build (x86_64 > allmodconfig) > failed like this: > > drivers/idle/intel_idle.c: In function 'adl_idle_state_table_update': > drivers/idle/intel_idle.c:1701:17: error: 'disable_promotion_to_c1e' > undeclared (first use in this function) > 1701 | disable_promotion_to_c1e = true; > | ^~~~~~~~~~~~~~~~~~~~~~~~ > drivers/idle/intel_idle.c:1701:17: note: each undeclared identifier > is reported only once for each function it appears in > drivers/idle/intel_idle.c:1706:9: error: implicit declaration of > function 'c1e_promotion_enable' [-Werror=implicit-function- > declaration] > 1706 | c1e_promotion_enable(); > | ^~~~~~~~~~~~~~~~~~~~ > drivers/idle/intel_idle.c: At top level: > drivers/idle/intel_idle.c:1854:13: error: conflicting types for > 'c1e_promotion_enable'; have 'void(void)' [-Werror] > 1854 | static void c1e_promotion_enable(void) > | ^~~~~~~~~~~~~~~~~~~~ > drivers/idle/intel_idle.c:1854:13: error: static declaration of > 'c1e_promotion_enable' follows non-static declaration > drivers/idle/intel_idle.c:1706:9: note: previous implicit declaration > of 'c1e_promotion_enable' with type 'void(void)' > 1706 | c1e_promotion_enable(); > | ^~~~~~~~~~~~~~~~~~~~ > > Caused by commit > > 39c184a6a9a7 ("intel_idle: Fix the 'preferred_cstates' module > parameter") > > interacting with commit > > cc6e234b8264 ("intel_idle: Add AlderLake support") > > Presumably this should have been fixed up in commit > > 55ecda6f25ef ("Merge branch 'intel-idle' into linux-next") > > I have used the pm tree from next-20220427 for today. >