[PATCH] cpufreq: Covert to exit callback returning void
lizhe
sensor1010 at 163.com
Thu Apr 11 00:33:13 AEST 2024
Hi，
i have already change the definition of exit
in struct cpu_freq_driver in include/linux/cpufreq.h
Lizhe
Thanks
At 2024-04-10 21:55:56, "Christophe Leroy" <christophe.leroy at csgroup.eu> wrote:
>
>
>Le 10/04/2024 à 15:42, lizhe a écrit :
>>
>> Hi，
>> I have already tested it, it is functioning properly, Please review.
>>
>> *Lizhe*
>>
>> Thanks
>>
>
>Please don't top-post, see
>https://docs.kernel.org/process/submitting-patches.html?highlight=mailing+list+etiquette#use-trimmed-interleaved-replies-in-email-discussions
>
>Please always post in plain text (ASCII-only), never as an HTML message.
>
>And still, your changes cannot build without a change in the definition
>of exit in struct cpu_freq driver in include/linux/cpufreq.h
>Never submit a patch that doesn't build.
>
>Christophe
>
>> At 2024-04-10 21:22:47, "Lizhe" <sensor1010 at 163.com> wrote:
>>>For the exit() callback function returning an int type value.
>>>this leads many driver authors mistakenly believing that error
>>>handling can be performed by returning an error code. However.
>>>the returned value is ignore, and to improve this situation.
>>>it is proposed to modify the return type of the exit() callback
>>>function to void
>>>
>>>Signed-off-by: Lizhe <sensor1010 at 163.com>
>>>---
>>> drivers/cpufreq/acpi-cpufreq.c | 4 +---
>>> drivers/cpufreq/amd-pstate.c | 7 ++-----
>>> drivers/cpufreq/apple-soc-cpufreq.c | 4 +---
>>> drivers/cpufreq/bmips-cpufreq.c | 4 +---
>>> drivers/cpufreq/cppc_cpufreq.c | 3 +--
>>> drivers/cpufreq/cpufreq-dt.c | 3 +--
>>> drivers/cpufreq/e_powersaver.c | 3 +--
>>> drivers/cpufreq/intel_pstate.c | 4 +---
>>> drivers/cpufreq/mediatek-cpufreq-hw.c | 4 +---
>>> drivers/cpufreq/mediatek-cpufreq.c | 4 +---
>>> drivers/cpufreq/omap-cpufreq.c | 3 +--
>>> drivers/cpufreq/pasemi-cpufreq.c | 6 ++----
>>> drivers/cpufreq/powernow-k6.c | 3 +--
>>> drivers/cpufreq/powernow-k7.c | 3 +--
>>> drivers/cpufreq/powernow-k8.c | 4 +---
>>> drivers/cpufreq/powernv-cpufreq.c | 4 +---
>>> drivers/cpufreq/ppc_cbe_cpufreq.c | 3 +--
>>> drivers/cpufreq/qcom-cpufreq-hw.c | 4 +---
>>> drivers/cpufreq/qoriq-cpufreq.c | 4 +---
>>> drivers/cpufreq/scmi-cpufreq.c | 4 +---
>>> drivers/cpufreq/scpi-cpufreq.c | 4 +---
>>> drivers/cpufreq/sh-cpufreq.c | 4 +---
>>> drivers/cpufreq/sparc-us2e-cpufreq.c | 3 +--
>>> drivers/cpufreq/sparc-us3-cpufreq.c | 3 +--
>>> drivers/cpufreq/speedstep-centrino.c | 4 +---
>>> drivers/cpufreq/tegra194-cpufreq.c | 4 +---
>>> drivers/cpufreq/vexpress-spc-cpufreq.c | 3 +--
>>> 27 files changed, 29 insertions(+), 74 deletions(-)
>>>
>>>diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
>>>index 37f1cdf46d29..33f18140e9a4 100644
>>>--- a/drivers/cpufreq/acpi-cpufreq.c
>>>+++ b/drivers/cpufreq/acpi-cpufreq.c
>>>@@ -906,7 +906,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return result;
>>> }
>>>
>>>-static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct acpi_cpufreq_data *data = policy->driver_data;
>>>
>>>@@ -919,8 +919,6 @@ static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> free_cpumask_var(data->freqdomain_cpus);
>>> kfree(policy->freq_table);
>>> kfree(data);
>>>-
>>>- return 0;
>>> }
>>>
>>> static int acpi_cpufreq_resume(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
>>>index 2015c9fcc3c9..60b3d20d5939 100644
>>>--- a/drivers/cpufreq/amd-pstate.c
>>>+++ b/drivers/cpufreq/amd-pstate.c
>>>@@ -919,7 +919,7 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy)
>>> return ret;
>>> }
>>>
>>>-static int amd_pstate_cpu_exit(struct cpufreq_policy *policy)
>>>+static void amd_pstate_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct amd_cpudata *cpudata = policy->driver_data;
>>>
>>>@@ -927,8 +927,6 @@ static int amd_pstate_cpu_exit(struct cpufreq_policy *policy)
>>> freq_qos_remove_request(&cpudata->req[0]);
>>> policy->fast_switch_possible = false;
>>> kfree(cpudata);
>>>-
>>>- return 0;
>>> }
>>>
>>> static int amd_pstate_cpu_resume(struct cpufreq_policy *policy)
>>>@@ -1376,10 +1374,9 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
>>> return ret;
>>> }
>>>
>>>-static int amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy)
>>>+static void amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> pr_debug("CPU %d exiting\n", policy->cpu);
>>>- return 0;
>>> }
>>>
>>> static void amd_pstate_epp_update_limit(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/apple-soc-cpufreq.c b/drivers/cpufreq/apple-soc-cpufreq.c
>>>index 021f423705e1..af34c22fa273 100644
>>>--- a/drivers/cpufreq/apple-soc-cpufreq.c
>>>+++ b/drivers/cpufreq/apple-soc-cpufreq.c
>>>@@ -305,7 +305,7 @@ static int apple_soc_cpufreq_init(struct cpufreq_policy *policy)
>>> return ret;
>>> }
>>>
>>>-static int apple_soc_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void apple_soc_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> struct apple_cpu_priv *priv = policy->driver_data;
>>>
>>>@@ -313,8 +313,6 @@ static int apple_soc_cpufreq_exit(struct cpufreq_policy *policy)
>>> dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
>>> iounmap(priv->reg_base);
>>> kfree(priv);
>>>-
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver apple_soc_cpufreq_driver = {
>>>diff --git a/drivers/cpufreq/bmips-cpufreq.c b/drivers/cpufreq/bmips-cpufreq.c
>>>index 39221a9a187a..17a4c174553d 100644
>>>--- a/drivers/cpufreq/bmips-cpufreq.c
>>>+++ b/drivers/cpufreq/bmips-cpufreq.c
>>>@@ -121,11 +121,9 @@ static int bmips_cpufreq_target_index(struct cpufreq_policy *policy,
>>> return 0;
>>> }
>>>
>>>-static int bmips_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void bmips_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> kfree(policy->freq_table);
>>>-
>>>- return 0;
>>> }
>>>
>>> static int bmips_cpufreq_init(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
>>>index 64420d9cfd1e..dccb9c1f087d 100644
>>>--- a/drivers/cpufreq/cppc_cpufreq.c
>>>+++ b/drivers/cpufreq/cppc_cpufreq.c
>>>@@ -688,7 +688,7 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return ret;
>>> }
>>>
>>>-static int cppc_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void cppc_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct cppc_cpudata *cpu_data = policy->driver_data;
>>> struct cppc_perf_caps *caps = &cpu_data->perf_caps;
>>>@@ -705,7 +705,6 @@ static int cppc_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> caps->lowest_perf, cpu, ret);
>>>
>>> cppc_cpufreq_put_cpu_data(policy);
>>>- return 0;
>>> }
>>>
>>> static inline u64 get_delta(u64 t1, u64 t0)
>>>diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
>>>index 2d83bbc65dd0..eaf02579ea74 100644
>>>--- a/drivers/cpufreq/cpufreq-dt.c
>>>+++ b/drivers/cpufreq/cpufreq-dt.c
>>>@@ -166,10 +166,9 @@ static int cpufreq_offline(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> clk_put(policy->clk);
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver dt_cpufreq_driver = {
>>>diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c
>>>index ab93bce8ae77..6e958b09e1b5 100644
>>>--- a/drivers/cpufreq/e_powersaver.c
>>>+++ b/drivers/cpufreq/e_powersaver.c
>>>@@ -360,14 +360,13 @@ static int eps_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int eps_cpu_exit(struct cpufreq_policy *policy)
>>>+static void eps_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> unsigned int cpu = policy->cpu;
>>>
>>> /* Bye */
>>> kfree(eps_cpu[cpu]);
>>> eps_cpu[cpu] = NULL;
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver eps_driver = {
>>>diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
>>>index dbbf299f4219..aa435d24c20e 100644
>>>--- a/drivers/cpufreq/intel_pstate.c
>>>+++ b/drivers/cpufreq/intel_pstate.c
>>>@@ -2731,13 +2731,11 @@ static int intel_pstate_cpu_offline(struct cpufreq_policy *policy)
>>> return intel_cpufreq_cpu_offline(policy);
>>> }
>>>
>>>-static int intel_pstate_cpu_exit(struct cpufreq_policy *policy)
>>>+static void intel_pstate_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> pr_debug("CPU %d exiting\n", policy->cpu);
>>>
>>> policy->fast_switch_possible = false;
>>>-
>>>- return 0;
>>> }
>>>
>>> static int __intel_pstate_cpu_init(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/mediatek-cpufreq-hw.c b/drivers/cpufreq/mediatek-cpufreq-hw.c
>>>index 8d097dcddda4..8925e096d5b9 100644
>>>--- a/drivers/cpufreq/mediatek-cpufreq-hw.c
>>>+++ b/drivers/cpufreq/mediatek-cpufreq-hw.c
>>>@@ -260,7 +260,7 @@ static int mtk_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int mtk_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
>>>+static void mtk_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct mtk_cpufreq_data *data = policy->driver_data;
>>> struct resource *res = data->res;
>>>@@ -270,8 +270,6 @@ static int mtk_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
>>> writel_relaxed(0x0, data->reg_bases[REG_FREQ_ENABLE]);
>>> iounmap(base);
>>> release_mem_region(res->start, resource_size(res));
>>>-
>>>- return 0;
>>> }
>>>
>>> static void mtk_cpufreq_register_em(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
>>>index a0a61919bc4c..aba34fb7948e 100644
>>>--- a/drivers/cpufreq/mediatek-cpufreq.c
>>>+++ b/drivers/cpufreq/mediatek-cpufreq.c
>>>@@ -599,13 +599,11 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void mtk_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> struct mtk_cpu_dvfs_info *info = policy->driver_data;
>>>
>>> dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table);
>>>-
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver mtk_cpufreq_driver = {
>>>diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
>>>index 895690856665..3458d5cc9b7f 100644
>>>--- a/drivers/cpufreq/omap-cpufreq.c
>>>+++ b/drivers/cpufreq/omap-cpufreq.c
>>>@@ -135,11 +135,10 @@ static int omap_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int omap_cpu_exit(struct cpufreq_policy *policy)
>>>+static void omap_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> freq_table_free();
>>> clk_put(policy->clk);
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver omap_driver = {
>>>diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
>>>index 039a66bbe1be..ee925b53b6b9 100644
>>>--- a/drivers/cpufreq/pasemi-cpufreq.c
>>>+++ b/drivers/cpufreq/pasemi-cpufreq.c
>>>@@ -204,21 +204,19 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return err;
>>> }
>>>
>>>-static int pas_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void pas_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> /*
>>> * We don't support CPU hotplug. Don't unmap after the system
>>> * has already made it to a running state.
>>> */
>>> if (system_state >= SYSTEM_RUNNING)
>>>- return 0;
>>>+ return;
>>>
>>> if (sdcasr_mapbase)
>>> iounmap(sdcasr_mapbase);
>>> if (sdcpwr_mapbase)
>>> iounmap(sdcpwr_mapbase);
>>>-
>>>- return 0;
>>> }
>>>
>>> static int pas_cpufreq_target(struct cpufreq_policy *policy,
>>>diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c
>>>index 41eefef95d87..156bec6c5420 100644
>>>--- a/drivers/cpufreq/powernow-k6.c
>>>+++ b/drivers/cpufreq/powernow-k6.c
>>>@@ -219,7 +219,7 @@ static int powernow_k6_cpu_init(struct cpufreq_policy *policy)
>>> }
>>>
>>>
>>>-static int powernow_k6_cpu_exit(struct cpufreq_policy *policy)
>>>+static void powernow_k6_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> unsigned int i;
>>>
>>>@@ -237,7 +237,6 @@ static int powernow_k6_cpu_exit(struct cpufreq_policy *policy)
>>> break;
>>> }
>>> }
>>>- return 0;
>>> }
>>>
>>> static unsigned int powernow_k6_get(unsigned int cpu)
>>>diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c
>>>index 5d515fc34836..4271446c8725 100644
>>>--- a/drivers/cpufreq/powernow-k7.c
>>>+++ b/drivers/cpufreq/powernow-k7.c
>>>@@ -644,7 +644,7 @@ static int powernow_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int powernow_cpu_exit(struct cpufreq_policy *policy)
>>>+static void powernow_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> #ifdef CONFIG_X86_POWERNOW_K7_ACPI
>>> if (acpi_processor_perf) {
>>>@@ -655,7 +655,6 @@ static int powernow_cpu_exit(struct cpufreq_policy *policy)
>>> #endif
>>>
>>> kfree(powernow_table);
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver powernow_driver = {
>>>diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
>>>index b10f7a1b77f1..5e663c3a6736 100644
>>>--- a/drivers/cpufreq/powernow-k8.c
>>>+++ b/drivers/cpufreq/powernow-k8.c
>>>@@ -1089,7 +1089,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
>>> return -ENODEV;
>>> }
>>>
>>>-static int powernowk8_cpu_exit(struct cpufreq_policy *pol)
>>>+static void powernowk8_cpu_exit(struct cpufreq_policy *pol)
>>> {
>>> struct powernow_k8_data *data = per_cpu(powernow_data, pol->cpu);
>>> int cpu;
>>>@@ -1104,8 +1104,6 @@ static int powernowk8_cpu_exit(struct cpufreq_policy *pol)
>>> /* pol->cpus will be empty here, use related_cpus instead. */
>>> for_each_cpu(cpu, pol->related_cpus)
>>> per_cpu(powernow_data, cpu) = NULL;
>>>-
>>>- return 0;
>>> }
>>>
>>> static void query_values_on_cpu(void *_err)
>>>diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
>>>index fddbd1ea1635..50c62929f7ca 100644
>>>--- a/drivers/cpufreq/powernv-cpufreq.c
>>>+++ b/drivers/cpufreq/powernv-cpufreq.c
>>>@@ -874,7 +874,7 @@ static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int powernv_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void powernv_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct powernv_smp_call_data freq_data;
>>> struct global_pstate_info *gpstates = policy->driver_data;
>>>@@ -886,8 +886,6 @@ static int powernv_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> del_timer_sync(&gpstates->timer);
>>>
>>> kfree(policy->driver_data);
>>>-
>>>- return 0;
>>> }
>>>
>>> static int powernv_cpufreq_reboot_notifier(struct notifier_block *nb,
>>>diff --git a/drivers/cpufreq/ppc_cbe_cpufreq.c b/drivers/cpufreq/ppc_cbe_cpufreq.c
>>>index 88afc49941b7..5ee4c7bfdcc5 100644
>>>--- a/drivers/cpufreq/ppc_cbe_cpufreq.c
>>>+++ b/drivers/cpufreq/ppc_cbe_cpufreq.c
>>>@@ -113,10 +113,9 @@ static int cbe_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int cbe_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void cbe_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> cbe_cpufreq_pmi_policy_exit(policy);
>>>- return 0;
>>> }
>>>
>>> static int cbe_cpufreq_target(struct cpufreq_policy *policy,
>>>diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
>>>index 70b0f21968a0..bb818111162d 100644
>>>--- a/drivers/cpufreq/qcom-cpufreq-hw.c
>>>+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
>>>@@ -573,7 +573,7 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
>>> return qcom_cpufreq_hw_lmh_init(policy, index);
>>> }
>>>
>>>-static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
>>>+static void qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct device *cpu_dev = get_cpu_device(policy->cpu);
>>> struct qcom_cpufreq_data *data = policy->driver_data;
>>>@@ -583,8 +583,6 @@ static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
>>> qcom_cpufreq_hw_lmh_exit(data);
>>> kfree(policy->freq_table);
>>> kfree(data);
>>>-
>>>- return 0;
>>> }
>>>
>>> static void qcom_cpufreq_ready(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c
>>>index 0aecaecbb0e6..3519bf34d397 100644
>>>--- a/drivers/cpufreq/qoriq-cpufreq.c
>>>+++ b/drivers/cpufreq/qoriq-cpufreq.c
>>>@@ -225,7 +225,7 @@ static int qoriq_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return -ENODEV;
>>> }
>>>
>>>-static int qoriq_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void qoriq_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> struct cpu_data *data = policy->driver_data;
>>>
>>>@@ -233,8 +233,6 @@ static int qoriq_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> kfree(data->table);
>>> kfree(data);
>>> policy->driver_data = NULL;
>>>-
>>>- return 0;
>>> }
>>>
>>> static int qoriq_cpufreq_target(struct cpufreq_policy *policy,
>>>diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
>>>index 3b4f6bfb2f4c..bf5f17f0dfb1 100644
>>>--- a/drivers/cpufreq/scmi-cpufreq.c
>>>+++ b/drivers/cpufreq/scmi-cpufreq.c
>>>@@ -308,7 +308,7 @@ static int scmi_cpufreq_init(struct cpufreq_policy *policy)
>>> return ret;
>>> }
>>>
>>>-static int scmi_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void scmi_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> struct scmi_data *priv = policy->driver_data;
>>>
>>>@@ -316,8 +316,6 @@ static int scmi_cpufreq_exit(struct cpufreq_policy *policy)
>>> dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
>>> free_cpumask_var(priv->opp_shared_cpus);
>>> kfree(priv);
>>>-
>>>- return 0;
>>> }
>>>
>>> static void scmi_cpufreq_register_em(struct cpufreq_policy *policy)
>>>diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
>>>index d33be56983ed..8d73e6e8be2a 100644
>>>--- a/drivers/cpufreq/scpi-cpufreq.c
>>>+++ b/drivers/cpufreq/scpi-cpufreq.c
>>>@@ -167,7 +167,7 @@ static int scpi_cpufreq_init(struct cpufreq_policy *policy)
>>> return ret;
>>> }
>>>
>>>-static int scpi_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void scpi_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> struct scpi_data *priv = policy->driver_data;
>>>
>>>@@ -175,8 +175,6 @@ static int scpi_cpufreq_exit(struct cpufreq_policy *policy)
>>> dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
>>> dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
>>> kfree(priv);
>>>-
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver scpi_cpufreq_driver = {
>>>diff --git a/drivers/cpufreq/sh-cpufreq.c b/drivers/cpufreq/sh-cpufreq.c
>>>index b8704232c27b..aa74036d0420 100644
>>>--- a/drivers/cpufreq/sh-cpufreq.c
>>>+++ b/drivers/cpufreq/sh-cpufreq.c
>>>@@ -135,14 +135,12 @@ static int sh_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int sh_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void sh_cpufreq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> unsigned int cpu = policy->cpu;
>>> struct clk *cpuclk = &per_cpu(sh_cpuclk, cpu);
>>>
>>> clk_put(cpuclk);
>>>-
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver sh_cpufreq_driver = {
>>>diff --git a/drivers/cpufreq/sparc-us2e-cpufreq.c b/drivers/cpufreq/sparc-us2e-cpufreq.c
>>>index 2783d3d55fce..8a0cd5312a59 100644
>>>--- a/drivers/cpufreq/sparc-us2e-cpufreq.c
>>>+++ b/drivers/cpufreq/sparc-us2e-cpufreq.c
>>>@@ -296,10 +296,9 @@ static int us2e_freq_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int us2e_freq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void us2e_freq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> us2e_freq_target(policy, 0);
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver cpufreq_us2e_driver = {
>>>diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c
>>>index 6c3657679a88..b50f9d13e6d2 100644
>>>--- a/drivers/cpufreq/sparc-us3-cpufreq.c
>>>+++ b/drivers/cpufreq/sparc-us3-cpufreq.c
>>>@@ -140,10 +140,9 @@ static int us3_freq_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
>>>+static void us3_freq_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> us3_freq_target(policy, 0);
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver cpufreq_us3_driver = {
>>>diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c
>>>index 75b10ecdb60f..28e65bcf7242 100644
>>>--- a/drivers/cpufreq/speedstep-centrino.c
>>>+++ b/drivers/cpufreq/speedstep-centrino.c
>>>@@ -400,7 +400,7 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int centrino_cpu_exit(struct cpufreq_policy *policy)
>>>+static void centrino_cpu_exit(struct cpufreq_policy *policy)
>>> {
>>> unsigned int cpu = policy->cpu;
>>>
>>>@@ -408,8 +408,6 @@ static int centrino_cpu_exit(struct cpufreq_policy *policy)
>>> return -ENODEV;
>>>
>>> per_cpu(centrino_model, cpu) = NULL;
>>>-
>>>- return 0;
>>> }
>>>
>>> /**
>>>diff --git a/drivers/cpufreq/tegra194-cpufreq.c b/drivers/cpufreq/tegra194-cpufreq.c
>>>index 59865ea455a8..07ea7ed61b68 100644
>>>--- a/drivers/cpufreq/tegra194-cpufreq.c
>>>+++ b/drivers/cpufreq/tegra194-cpufreq.c
>>>@@ -551,14 +551,12 @@ static int tegra194_cpufreq_offline(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int tegra194_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void tegra194_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> struct device *cpu_dev = get_cpu_device(policy->cpu);
>>>
>>> dev_pm_opp_remove_all_dynamic(cpu_dev);
>>> dev_pm_opp_of_cpumask_remove_table(policy->related_cpus);
>>>-
>>>- return 0;
>>> }
>>>
>>> static int tegra194_cpufreq_set_target(struct cpufreq_policy *policy,
>>>diff --git a/drivers/cpufreq/vexpress-spc-cpufreq.c b/drivers/cpufreq/vexpress-spc-cpufreq.c
>>>index 9ac4ea50b874..b2a42cdb9582 100644
>>>--- a/drivers/cpufreq/vexpress-spc-cpufreq.c
>>>+++ b/drivers/cpufreq/vexpress-spc-cpufreq.c
>>>@@ -447,7 +447,7 @@ static int ve_spc_cpufreq_init(struct cpufreq_policy *policy)
>>> return 0;
>>> }
>>>
>>>-static int ve_spc_cpufreq_exit(struct cpufreq_policy *policy)
>>>+static void ve_spc_cpufreq_exit(struct cpufreq_policy *policy)
>>> {
>>> struct device *cpu_dev;
>>>
>>>@@ -459,7 +459,6 @@ static int ve_spc_cpufreq_exit(struct cpufreq_policy *policy)
>>> }
>>>
>>> put_cluster_clk_and_freq_table(cpu_dev, policy->related_cpus);
>>>- return 0;
>>> }
>>>
>>> static struct cpufreq_driver ve_spc_cpufreq_driver = {
>>>--
>>>2.25.1
>>
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