* [avpatel:riscv_trace_support_v1 30/57] drivers/firmware/riscv/riscv_sbi_sse.c:505 sse_event_register() error: uninitialized symbol 'preferred_hart'.
@ 2025-11-03 22:22 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-11-03 22:22 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp, Dan Carpenter
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: "Clément Léger" <cleger@rivosinc.com>
CC: Anup Patel <anup@brainfault.org>
CC: Himanshu Chauhan <hchauhan@ventanamicro.com>
tree: https://github.com/avpatel/linux.git riscv_trace_support_v1
head: 3f71314c58520f6fada72d7f0364429fc3e8bf50
commit: 3e89594245fa2cf4bd298955d807fcd625294f22 [30/57] drivers: firmware: add riscv SSE support
:::::: branch date: 7 days ago
:::::: commit date: 7 days ago
config: riscv-randconfig-r071-20251103 (https://download.01.org/0day-ci/archive/20251104/202511040647.EOR2ShWh-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 15.1.0
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@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202511040647.EOR2ShWh-lkp@intel.com/
smatch warnings:
drivers/firmware/riscv/riscv_sbi_sse.c:505 sse_event_register() error: uninitialized symbol 'preferred_hart'.
vim +/preferred_hart +505 drivers/firmware/riscv/riscv_sbi_sse.c
3e89594245fa2c Clément Léger 2025-09-08 476
3e89594245fa2c Clément Léger 2025-09-08 477 struct sse_event *sse_event_register(u32 evt, u32 priority,
3e89594245fa2c Clément Léger 2025-09-08 478 sse_event_handler_fn *handler, void *arg)
3e89594245fa2c Clément Léger 2025-09-08 479 {
3e89594245fa2c Clément Léger 2025-09-08 480 struct sse_event *event;
3e89594245fa2c Clément Léger 2025-09-08 481 int cpu;
3e89594245fa2c Clément Léger 2025-09-08 482 int ret = 0;
3e89594245fa2c Clément Léger 2025-09-08 483
3e89594245fa2c Clément Léger 2025-09-08 484 if (!sse_available)
3e89594245fa2c Clément Léger 2025-09-08 485 return ERR_PTR(-EOPNOTSUPP);
3e89594245fa2c Clément Léger 2025-09-08 486
3e89594245fa2c Clément Léger 2025-09-08 487 guard(mutex)(&sse_mutex);
3e89594245fa2c Clément Léger 2025-09-08 488 if (sse_event_get(evt))
3e89594245fa2c Clément Léger 2025-09-08 489 return ERR_PTR(-EEXIST);
3e89594245fa2c Clément Léger 2025-09-08 490
3e89594245fa2c Clément Léger 2025-09-08 491 event = sse_event_alloc(evt, priority, handler, arg);
3e89594245fa2c Clément Léger 2025-09-08 492 if (IS_ERR(event))
3e89594245fa2c Clément Léger 2025-09-08 493 return event;
3e89594245fa2c Clément Léger 2025-09-08 494
3e89594245fa2c Clément Léger 2025-09-08 495 scoped_guard(cpus_read_lock) {
3e89594245fa2c Clément Léger 2025-09-08 496 if (sse_event_is_global(evt)) {
3e89594245fa2c Clément Léger 2025-09-08 497 unsigned long preferred_hart;
3e89594245fa2c Clément Léger 2025-09-08 498
3e89594245fa2c Clément Léger 2025-09-08 499 ret = sse_event_attr_get_no_lock(event->global,
3e89594245fa2c Clément Léger 2025-09-08 500 SBI_SSE_ATTR_PREFERRED_HART,
3e89594245fa2c Clément Léger 2025-09-08 501 &preferred_hart);
3e89594245fa2c Clément Léger 2025-09-08 502 if (ret)
3e89594245fa2c Clément Léger 2025-09-08 503 goto err_event_free;
3e89594245fa2c Clément Léger 2025-09-08 504
3e89594245fa2c Clément Léger 2025-09-08 @505 cpu = riscv_hartid_to_cpuid(preferred_hart);
3e89594245fa2c Clément Léger 2025-09-08 506 sse_global_event_update_cpu(event, cpu);
3e89594245fa2c Clément Léger 2025-09-08 507
3e89594245fa2c Clément Léger 2025-09-08 508 ret = sse_sbi_register_event(event, event->global);
3e89594245fa2c Clément Léger 2025-09-08 509 if (ret)
3e89594245fa2c Clément Léger 2025-09-08 510 goto err_event_free;
3e89594245fa2c Clément Léger 2025-09-08 511
3e89594245fa2c Clément Léger 2025-09-08 512 } else {
3e89594245fa2c Clément Léger 2025-09-08 513 ret = sse_on_each_cpu(event, SBI_SSE_EVENT_REGISTER,
3e89594245fa2c Clément Léger 2025-09-08 514 SBI_SSE_EVENT_DISABLE);
3e89594245fa2c Clément Léger 2025-09-08 515 if (ret)
3e89594245fa2c Clément Léger 2025-09-08 516 goto err_event_free;
3e89594245fa2c Clément Léger 2025-09-08 517 }
3e89594245fa2c Clément Léger 2025-09-08 518 }
3e89594245fa2c Clément Léger 2025-09-08 519
3e89594245fa2c Clément Léger 2025-09-08 520 scoped_guard(spinlock, &events_list_lock)
3e89594245fa2c Clément Léger 2025-09-08 521 list_add(&event->list, &events);
3e89594245fa2c Clément Léger 2025-09-08 522
3e89594245fa2c Clément Léger 2025-09-08 523 return event;
3e89594245fa2c Clément Léger 2025-09-08 524
3e89594245fa2c Clément Léger 2025-09-08 525 err_event_free:
3e89594245fa2c Clément Léger 2025-09-08 526 sse_event_free(event);
3e89594245fa2c Clément Léger 2025-09-08 527
3e89594245fa2c Clément Léger 2025-09-08 528 return ERR_PTR(ret);
3e89594245fa2c Clément Léger 2025-09-08 529 }
3e89594245fa2c Clément Léger 2025-09-08 530 EXPORT_SYMBOL_GPL(sse_event_register);
3e89594245fa2c Clément Léger 2025-09-08 531
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2025-11-03 22:22 [avpatel:riscv_trace_support_v1 30/57] drivers/firmware/riscv/riscv_sbi_sse.c:505 sse_event_register() error: uninitialized symbol 'preferred_hart' kernel test robot
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