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authorMarek Szyprowski <m.szyprowski@samsung.com>2025-11-26 12:00:38 +0100
committerKrzysztof Kozlowski <krzk@kernel.org>2025-11-27 16:02:59 +0100
commit2224ea67c75d0a0b9eaf803d0dfdab8d0c601c35 (patch)
treeac2154aa2371fab4e4cdd4f204c1238d2e69f562
parent3a8660878839faadb4f1a6dd72c3179c1df56787 (diff)
soc: samsung: exynos-pmu: Fix structure initialization
Commit 78b72897a5c8 ("soc: samsung: exynos-pmu: Enable CPU Idle for gs101") added system wide suspend/resume callbacks to Exynos PMU driver, but some items used by these callbacks are initialized only on GS101-compatible boards. Move that initialization to exynos_pmu_probe() to avoid potential lockdep warnings like below observed during system suspend/resume cycle: INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 2134 Comm: rtcwake Not tainted 6.18.0-rc7-next-20251126-00039-g1d656a1af243 #11794 PREEMPT Hardware name: Samsung Exynos (Flattened Device Tree) Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x68/0x88 dump_stack_lvl from register_lock_class+0x970/0x988 register_lock_class from __lock_acquire+0xc8/0x29ec __lock_acquire from lock_acquire+0x134/0x39c lock_acquire from _raw_spin_lock+0x38/0x48 _raw_spin_lock from exynos_cpupm_suspend_noirq+0x18/0x34 exynos_cpupm_suspend_noirq from dpm_run_callback+0x98/0x2b8 dpm_run_callback from device_suspend_noirq+0x8c/0x310 Fixes: 78b72897a5c8 ("soc: samsung: exynos-pmu: Enable CPU Idle for gs101") Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patch.msgid.link/20251126110038.3326768-1-m.szyprowski@samsung.com [krzk: include calltrace into commit msg] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
-rw-r--r--drivers/soc/samsung/exynos-pmu.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c
index 22c50ca2aa79..df5b1f299a26 100644
--- a/drivers/soc/samsung/exynos-pmu.c
+++ b/drivers/soc/samsung/exynos-pmu.c
@@ -585,10 +585,6 @@ static int setup_cpuhp_and_cpuidle(struct device *dev)
if (!pmu_context->in_cpuhp)
return -ENOMEM;
- raw_spin_lock_init(&pmu_context->cpupm_lock);
- pmu_context->sys_inreboot = false;
- pmu_context->sys_insuspend = false;
-
/* set PMU to power on */
for_each_online_cpu(cpu)
gs101_cpuhp_pmu_online(cpu);
@@ -657,6 +653,9 @@ static int exynos_pmu_probe(struct platform_device *pdev)
pmu_context->pmureg = regmap;
pmu_context->dev = dev;
+ raw_spin_lock_init(&pmu_context->cpupm_lock);
+ pmu_context->sys_inreboot = false;
+ pmu_context->sys_insuspend = false;
if (pmu_context->pmu_data && pmu_context->pmu_data->pmu_cpuhp) {
ret = setup_cpuhp_and_cpuidle(dev);