tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 9e5cff2a1315fec1da1f497714395670366506b6 commit: b65e58ae2a09e89e5060bcd122a2cd6c66919d21 [14156/15421] include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*() config: powerpc64-randconfig-s031-20210429 (attached as .config) compiler: powerpc64le-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=b65e58ae2a09e89e5060bcd122a2cd6c66919d21 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout b65e58ae2a09e89e5060bcd122a2cd6c66919d21 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/cpufreq/powernv-cpufreq.c:947:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] type @@ got unsigned long long [usertype] @@ drivers/cpufreq/powernv-cpufreq.c:947:19: sparse: expected restricted __be64 [usertype] type drivers/cpufreq/powernv-cpufreq.c:947:19: sparse: got unsigned long long [usertype] >> drivers/cpufreq/powernv-cpufreq.c:970:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] chip @@ got unsigned long long [usertype] @@ drivers/cpufreq/powernv-cpufreq.c:970:27: sparse: expected restricted __be64 [usertype] chip drivers/cpufreq/powernv-cpufreq.c:970:27: sparse: got unsigned long long [usertype] >> drivers/cpufreq/powernv-cpufreq.c:971:38: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] throttle_status @@ got unsigned long long [usertype] @@ drivers/cpufreq/powernv-cpufreq.c:971:38: sparse: expected restricted __be64 [usertype] throttle_status drivers/cpufreq/powernv-cpufreq.c:971:38: sparse: got unsigned long long [usertype] drivers/cpufreq/powernv-cpufreq.c:987:48: sparse: sparse: restricted __be64 degrades to integer drivers/cpufreq/powernv-cpufreq.c:990:25: sparse: sparse: restricted __be64 degrades to integer drivers/cpufreq/powernv-cpufreq.c:991:25: sparse: sparse: restricted __be64 degrades to integer drivers/cpufreq/powernv-cpufreq.c:992:50: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned char [usertype] throttle_reason @@ got restricted __be64 [usertype] throttle_status @@ drivers/cpufreq/powernv-cpufreq.c:992:50: sparse: expected unsigned char [usertype] throttle_reason drivers/cpufreq/powernv-cpufreq.c:992:50: sparse: got restricted __be64 [usertype] throttle_status drivers/cpufreq/powernv-cpufreq.c:993:45: sparse: sparse: restricted __be64 degrades to integer drivers/cpufreq/powernv-cpufreq.c:949:21: sparse: sparse: restricted __be64 degrades to integer drivers/cpufreq/powernv-cpufreq.c:949:21: sparse: sparse: restricted __be64 degrades to integer vim +947 drivers/cpufreq/powernv-cpufreq.c 735366fc407755 Shilpasri G Bhat 2015-07-16 936 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 937 static int powernv_cpufreq_occ_msg(struct notifier_block *nb, cb166fa937a2fb Shilpasri G Bhat 2015-07-16 938 unsigned long msg_type, void *_msg) cb166fa937a2fb Shilpasri G Bhat 2015-07-16 939 { cb166fa937a2fb Shilpasri G Bhat 2015-07-16 940 struct opal_msg *msg = _msg; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 941 struct opal_occ_msg omsg; 735366fc407755 Shilpasri G Bhat 2015-07-16 942 int i; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 943 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 944 if (msg_type != OPAL_MSG_OCC) cb166fa937a2fb Shilpasri G Bhat 2015-07-16 945 return 0; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 946 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 @947 omsg.type = be64_to_cpu(msg->params[0]); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 948 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 949 switch (omsg.type) { cb166fa937a2fb Shilpasri G Bhat 2015-07-16 950 case OCC_RESET: cb166fa937a2fb Shilpasri G Bhat 2015-07-16 951 occ_reset = true; 309d0631cc329c Shilpasri G Bhat 2015-08-27 952 pr_info("OCC (On Chip Controller - enforces hard thermal/power limits) Resetting\n"); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 953 /* cb166fa937a2fb Shilpasri G Bhat 2015-07-16 954 * powernv_cpufreq_throttle_check() is called in cb166fa937a2fb Shilpasri G Bhat 2015-07-16 955 * target() callback which can detect the throttle state cb166fa937a2fb Shilpasri G Bhat 2015-07-16 956 * for governors like ondemand. cb166fa937a2fb Shilpasri G Bhat 2015-07-16 957 * But static governors will not call target() often thus cb166fa937a2fb Shilpasri G Bhat 2015-07-16 958 * report throttling here. cb166fa937a2fb Shilpasri G Bhat 2015-07-16 959 */ cb166fa937a2fb Shilpasri G Bhat 2015-07-16 960 if (!throttled) { cb166fa937a2fb Shilpasri G Bhat 2015-07-16 961 throttled = true; c89f2682a39192 Shilpasri G Bhat 2016-02-03 962 pr_warn("CPU frequency is throttled for duration\n"); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 963 } 309d0631cc329c Shilpasri G Bhat 2015-08-27 964 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 965 break; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 966 case OCC_LOAD: 309d0631cc329c Shilpasri G Bhat 2015-08-27 967 pr_info("OCC Loading, CPU frequency is throttled until OCC is started\n"); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 968 break; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 969 case OCC_THROTTLE: cb166fa937a2fb Shilpasri G Bhat 2015-07-16 @970 omsg.chip = be64_to_cpu(msg->params[1]); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 @971 omsg.throttle_status = be64_to_cpu(msg->params[2]); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 972 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 973 if (occ_reset) { cb166fa937a2fb Shilpasri G Bhat 2015-07-16 974 occ_reset = false; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 975 throttled = false; 309d0631cc329c Shilpasri G Bhat 2015-08-27 976 pr_info("OCC Active, CPU frequency is no longer throttled\n"); 735366fc407755 Shilpasri G Bhat 2015-07-16 977 227942809b52f2 Shilpasri G Bhat 2015-07-16 978 for (i = 0; i < nr_chips; i++) { 227942809b52f2 Shilpasri G Bhat 2015-07-16 979 chips[i].restore = true; 735366fc407755 Shilpasri G Bhat 2015-07-16 980 schedule_work(&chips[i].throttle); 227942809b52f2 Shilpasri G Bhat 2015-07-16 981 } 735366fc407755 Shilpasri G Bhat 2015-07-16 982 cb166fa937a2fb Shilpasri G Bhat 2015-07-16 983 return 0; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 984 } cb166fa937a2fb Shilpasri G Bhat 2015-07-16 985 c89f2682a39192 Shilpasri G Bhat 2016-02-03 986 for (i = 0; i < nr_chips; i++) c89f2682a39192 Shilpasri G Bhat 2016-02-03 987 if (chips[i].id == omsg.chip) c89f2682a39192 Shilpasri G Bhat 2016-02-03 988 break; c89f2682a39192 Shilpasri G Bhat 2016-02-03 989 c89f2682a39192 Shilpasri G Bhat 2016-02-03 990 if (omsg.throttle_status >= 0 && 1b0289848d5dce Shilpasri G Bhat 2016-03-22 991 omsg.throttle_status <= OCC_MAX_THROTTLE_STATUS) { c89f2682a39192 Shilpasri G Bhat 2016-02-03 992 chips[i].throttle_reason = omsg.throttle_status; 1b0289848d5dce Shilpasri G Bhat 2016-03-22 993 chips[i].reason[omsg.throttle_status]++; 1b0289848d5dce Shilpasri G Bhat 2016-03-22 994 } 735366fc407755 Shilpasri G Bhat 2015-07-16 995 227942809b52f2 Shilpasri G Bhat 2015-07-16 996 if (!omsg.throttle_status) 227942809b52f2 Shilpasri G Bhat 2015-07-16 997 chips[i].restore = true; c89f2682a39192 Shilpasri G Bhat 2016-02-03 998 735366fc407755 Shilpasri G Bhat 2015-07-16 999 schedule_work(&chips[i].throttle); cb166fa937a2fb Shilpasri G Bhat 2015-07-16 1000 } cb166fa937a2fb Shilpasri G Bhat 2015-07-16 1001 return 0; cb166fa937a2fb Shilpasri G Bhat 2015-07-16 1002 } cb166fa937a2fb Shilpasri G Bhat 2015-07-16 1003 :::::: The code at line 947 was first introduced by commit :::::: cb166fa937a2fbc14badcafca86202354c34a213 cpufreq: powernv: Register for OCC related opal_message notification :::::: TO: Shilpasri G Bhat <shilpa.bhat@xxxxxxxxxxxxxxxxxx> :::::: CC: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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