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Date: Sun, 3 Dec 2023 14:31:50 +0800
From: kernel test robot <lkp@...el.com>
To: Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
"Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>
Subject: drivers/cpufreq/powernv-cpufreq.c:521:50: sparse: sparse: incorrect
type in assignment (different base types)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 815fb87b753055df2d9e50f6cd80eb10235fe3e9
commit: c89f2682a39192433c296bf97b834fd2815a758b cpufreq: powernv: Replace pr_info with trace print for throttle event
date: 8 years ago
config: powerpc64-randconfig-r113-20231107 (https://download.01.org/0day-ci/archive/20231203/202312030500.WC4krvMp-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231203/202312030500.WC4krvMp-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312030500.WC4krvMp-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/cpufreq/powernv-cpufreq.c:190:18: sparse: sparse: symbol 'cpufreq_freq_attr_cpuinfo_nominal_freq' was not declared. Should it be static?
drivers/cpufreq/powernv-cpufreq.c:436:6: sparse: sparse: symbol 'powernv_cpufreq_work_fn' was not declared. Should it be static?
drivers/cpufreq/powernv-cpufreq.c:476:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] type @@ got unsigned long long @@
drivers/cpufreq/powernv-cpufreq.c:476:19: sparse: expected restricted __be64 [usertype] type
drivers/cpufreq/powernv-cpufreq.c:476:19: sparse: got unsigned long long
drivers/cpufreq/powernv-cpufreq.c:499:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] chip @@ got unsigned long long @@
drivers/cpufreq/powernv-cpufreq.c:499:27: sparse: expected restricted __be64 [usertype] chip
drivers/cpufreq/powernv-cpufreq.c:499:27: sparse: got unsigned long long
drivers/cpufreq/powernv-cpufreq.c:500:38: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] throttle_status @@ got unsigned long long @@
drivers/cpufreq/powernv-cpufreq.c:500:38: sparse: expected restricted __be64 [usertype] throttle_status
drivers/cpufreq/powernv-cpufreq.c:500:38: sparse: got unsigned long long
drivers/cpufreq/powernv-cpufreq.c:516:48: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:519:25: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:520:25: sparse: sparse: restricted __be64 degrades to integer
>> drivers/cpufreq/powernv-cpufreq.c:521:50: 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:521:50: sparse: expected unsigned char [usertype] throttle_reason
drivers/cpufreq/powernv-cpufreq.c:521:50: sparse: got restricted __be64 [usertype] throttle_status
drivers/cpufreq/powernv-cpufreq.c:478:21: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:478:21: sparse: sparse: restricted __be64 degrades to integer
drivers/cpufreq/powernv-cpufreq.c:436:6: warning: no previous prototype for 'powernv_cpufreq_work_fn' [-Wmissing-prototypes]
436 | void powernv_cpufreq_work_fn(struct work_struct *work)
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/cpufreq/powernv-cpufreq.c: In function 'powernv_cpufreq_occ_msg':
drivers/cpufreq/powernv-cpufreq.c:519:42: warning: comparison of unsigned expression in '>= 0' is always true [-Wtype-limits]
519 | if (omsg.throttle_status >= 0 &&
| ^~
vim +521 drivers/cpufreq/powernv-cpufreq.c
465
466 static int powernv_cpufreq_occ_msg(struct notifier_block *nb,
467 unsigned long msg_type, void *_msg)
468 {
469 struct opal_msg *msg = _msg;
470 struct opal_occ_msg omsg;
471 int i;
472
473 if (msg_type != OPAL_MSG_OCC)
474 return 0;
475
476 omsg.type = be64_to_cpu(msg->params[0]);
477
478 switch (omsg.type) {
479 case OCC_RESET:
480 occ_reset = true;
481 pr_info("OCC (On Chip Controller - enforces hard thermal/power limits) Resetting\n");
482 /*
483 * powernv_cpufreq_throttle_check() is called in
484 * target() callback which can detect the throttle state
485 * for governors like ondemand.
486 * But static governors will not call target() often thus
487 * report throttling here.
488 */
489 if (!throttled) {
490 throttled = true;
491 pr_warn("CPU frequency is throttled for duration\n");
492 }
493
494 break;
495 case OCC_LOAD:
496 pr_info("OCC Loading, CPU frequency is throttled until OCC is started\n");
497 break;
498 case OCC_THROTTLE:
499 omsg.chip = be64_to_cpu(msg->params[1]);
500 omsg.throttle_status = be64_to_cpu(msg->params[2]);
501
502 if (occ_reset) {
503 occ_reset = false;
504 throttled = false;
505 pr_info("OCC Active, CPU frequency is no longer throttled\n");
506
507 for (i = 0; i < nr_chips; i++) {
508 chips[i].restore = true;
509 schedule_work(&chips[i].throttle);
510 }
511
512 return 0;
513 }
514
515 for (i = 0; i < nr_chips; i++)
516 if (chips[i].id == omsg.chip)
517 break;
518
519 if (omsg.throttle_status >= 0 &&
520 omsg.throttle_status <= OCC_MAX_THROTTLE_STATUS)
> 521 chips[i].throttle_reason = omsg.throttle_status;
522
523 if (!omsg.throttle_status)
524 chips[i].restore = true;
525
526 schedule_work(&chips[i].throttle);
527 }
528 return 0;
529 }
530
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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