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However, in cpu_dev_register_generic(), for_each_present_cpu() is used to register CPU devices which means the CPU devices are only registered for present CPUs and not all possible CPUs. With nosmp or maxcpus=0, only the boot CPU is present, lead to the cpufreq probe failure or defer probe due to no cpu device available for not present CPUs. Change for_each_possible_cpu() to for_each_present_cpu() in the above cpufreq drivers to ensure it only registers cpufreq for CPUs that are actually present. Fixes: b0c69e1214bc ("drivers: base: Use present CPUs in GENERIC_CPU_DEVICES") Reviewed-by: Sudeep Holla Signed-off-by: Jacky Bai --- - v3 changes: - refine the changlog to drop the changed driver list. - v2 changes: - Add changes for armada-8k-cpufreq, mvebu-cpfureq, qcome-cpufreq-hw, scmi-cpufreq, scpi-cpufreq, virtual-cpufreq. --- drivers/cpufreq/armada-8k-cpufreq.c | 2 +- drivers/cpufreq/cpufreq-dt.c | 2 +- drivers/cpufreq/mediatek-cpufreq-hw.c | 2 +- drivers/cpufreq/mediatek-cpufreq.c | 2 +- drivers/cpufreq/mvebu-cpufreq.c | 2 +- drivers/cpufreq/qcom-cpufreq-hw.c | 2 +- drivers/cpufreq/qcom-cpufreq-nvmem.c | 8 ++++---- drivers/cpufreq/scmi-cpufreq.c | 2 +- drivers/cpufreq/scpi-cpufreq.c | 2 +- drivers/cpufreq/sun50i-cpufreq-nvmem.c | 6 +++--- drivers/cpufreq/virtual-cpufreq.c | 2 +- 11 files changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/cpufreq/armada-8k-cpufreq.c b/drivers/cpufreq/armada-8k-cpufreq.c index 7a979db81f09..5a3545bd0d8d 100644 --- a/drivers/cpufreq/armada-8k-cpufreq.c +++ b/drivers/cpufreq/armada-8k-cpufreq.c @@ -47,7 +47,7 @@ static void __init armada_8k_get_sharing_cpus(struct clk *cur_clk, { int cpu; - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { struct device *cpu_dev; struct clk *clk; diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 778916f89a51..e80dd982a3e2 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -283,7 +283,7 @@ static int dt_cpufreq_probe(struct platform_device *pdev) int ret, cpu; /* Request resources early so we can return in case of -EPROBE_DEFER */ - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { ret = dt_cpufreq_early_init(&pdev->dev, cpu); if (ret) goto err; diff --git a/drivers/cpufreq/mediatek-cpufreq-hw.c b/drivers/cpufreq/mediatek-cpufreq-hw.c index aa209f5527dc..74f1b4c796e4 100644 --- a/drivers/cpufreq/mediatek-cpufreq-hw.c +++ b/drivers/cpufreq/mediatek-cpufreq-hw.c @@ -303,7 +303,7 @@ static int mtk_cpufreq_hw_driver_probe(struct platform_device *pdev) struct regulator *cpu_reg; /* Make sure that all CPU supplies are available before proceeding. */ - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { cpu_dev = get_cpu_device(cpu); if (!cpu_dev) return dev_err_probe(&pdev->dev, -EPROBE_DEFER, diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 2656b88db378..f3f02c4b6888 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -631,7 +631,7 @@ static int mtk_cpufreq_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, -ENODEV, "failed to get mtk cpufreq platform data\n"); - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { info = mtk_cpu_dvfs_info_lookup(cpu); if (info) continue; diff --git a/drivers/cpufreq/mvebu-cpufreq.c b/drivers/cpufreq/mvebu-cpufreq.c index 7f3cfe668f30..2aad4c04673c 100644 --- a/drivers/cpufreq/mvebu-cpufreq.c +++ b/drivers/cpufreq/mvebu-cpufreq.c @@ -56,7 +56,7 @@ static int __init armada_xp_pmsu_cpufreq_init(void) * it), and registers the clock notifier that will take care * of doing the PMSU part of a frequency transition. */ - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { struct device *cpu_dev; struct clk *clk; int ret; diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index 4b3b3dbc7d38..8422704a3b10 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -306,7 +306,7 @@ static void qcom_get_related_cpus(int index, struct cpumask *m) struct of_phandle_args args; int cpu, ret; - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { cpu_np = of_cpu_device_node_get(cpu); if (!cpu_np) continue; diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c index 3a8ed723a23e..54f8117103c8 100644 --- a/drivers/cpufreq/qcom-cpufreq-nvmem.c +++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c @@ -489,7 +489,7 @@ static int qcom_cpufreq_probe(struct platform_device *pdev) nvmem_cell_put(speedbin_nvmem); } - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { struct dev_pm_opp_config config = { .supported_hw = NULL, }; @@ -543,7 +543,7 @@ static int qcom_cpufreq_probe(struct platform_device *pdev) dev_err(cpu_dev, "Failed to register platform device\n"); free_opp: - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { dev_pm_domain_detach_list(drv->cpus[cpu].pd_list); dev_pm_opp_clear_config(drv->cpus[cpu].opp_token); } @@ -557,7 +557,7 @@ static void qcom_cpufreq_remove(struct platform_device *pdev) platform_device_unregister(cpufreq_dt_pdev); - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { dev_pm_domain_detach_list(drv->cpus[cpu].pd_list); dev_pm_opp_clear_config(drv->cpus[cpu].opp_token); } @@ -568,7 +568,7 @@ static int qcom_cpufreq_suspend(struct device *dev) struct qcom_cpufreq_drv *drv = dev_get_drvdata(dev); unsigned int cpu; - for_each_possible_cpu(cpu) + for_each_present_cpu(cpu) qcom_cpufreq_suspend_pd_devs(drv, cpu); return 0; diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c index ff2897789797..c310aeebc8f3 100644 --- a/drivers/cpufreq/scmi-cpufreq.c +++ b/drivers/cpufreq/scmi-cpufreq.c @@ -104,7 +104,7 @@ scmi_get_sharing_cpus(struct device *cpu_dev, int domain, int cpu, tdomain; struct device *tcpu_dev; - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { if (cpu == cpu_dev->id) continue; diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c index 048dc43a9997..17cda84f00df 100644 --- a/drivers/cpufreq/scpi-cpufreq.c +++ b/drivers/cpufreq/scpi-cpufreq.c @@ -65,7 +65,7 @@ scpi_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask) if (domain < 0) return domain; - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { if (cpu == cpu_dev->id) continue; diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c index 17d6a149f580..47d6840b3489 100644 --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c @@ -262,7 +262,7 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev) snprintf(name, sizeof(name), "speed%d", speed); config.prop_name = name; - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { struct device *cpu_dev = get_cpu_device(cpu); if (!cpu_dev) { @@ -288,7 +288,7 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev) pr_err("Failed to register platform device\n"); free_opp: - for_each_possible_cpu(cpu) + for_each_present_cpu(cpu) dev_pm_opp_clear_config(opp_tokens[cpu]); kfree(opp_tokens); @@ -302,7 +302,7 @@ static void sun50i_cpufreq_nvmem_remove(struct platform_device *pdev) platform_device_unregister(cpufreq_dt_pdev); - for_each_possible_cpu(cpu) + for_each_present_cpu(cpu) dev_pm_opp_clear_config(opp_tokens[cpu]); kfree(opp_tokens); diff --git a/drivers/cpufreq/virtual-cpufreq.c b/drivers/cpufreq/virtual-cpufreq.c index 45becb92aa4a..7dd1b0c263c7 100644 --- a/drivers/cpufreq/virtual-cpufreq.c +++ b/drivers/cpufreq/virtual-cpufreq.c @@ -138,7 +138,7 @@ static int virt_cpufreq_get_sharing_cpus(struct cpufreq_policy *policy) cur_perf_domain = readl_relaxed(base + policy->cpu * PER_CPU_OFFSET + REG_PERF_DOMAIN_OFFSET); - for_each_possible_cpu(cpu) { + for_each_present_cpu(cpu) { cpu_dev = get_cpu_device(cpu); if (!cpu_dev) continue;