[03/27] cpufreq: acpi: Don't validate the frequency table twice
diff mbox

Message ID 06cc728bfe2ebd52dce2ccd2310a40cc9d4db1dc.1519620578.git.viresh.kumar@linaro.org
State Mainlined
Delegated to: Rafael Wysocki
Headers show

Commit Message

Viresh Kumar Feb. 26, 2018, 5:08 a.m. UTC
The cpufreq core is already validating the CPU frequency table after
calling the ->init() callback of the cpufreq drivers and the drivers
don't need to do the same anymore. Though they need to set the
policy->freq_table field directly from the ->init() callback now.

Stop validating the frequency table from acpi-cpufreq driver.

The driver needs to crosscheck if the max frequency corresponds to the
P-state 0 or not and the same is done from the ->ready() callback now.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/acpi-cpufreq.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

Patch
diff mbox

diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index d0c34df0529c..9449657d72f0 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -794,15 +794,9 @@  static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		valid_states++;
 	}
 	freq_table[valid_states].frequency = CPUFREQ_TABLE_END;
+	policy->freq_table = freq_table;
 	perf->state = 0;
 
-	result = cpufreq_table_validate_and_show(policy, freq_table);
-	if (result)
-		goto err_freqfree;
-
-	if (perf->states[0].core_frequency * 1000 != policy->cpuinfo.max_freq)
-		pr_warn(FW_WARN "P-state 0 is not max freq\n");
-
 	switch (perf->control_register.space_id) {
 	case ACPI_ADR_SPACE_SYSTEM_IO:
 		/*
@@ -842,8 +836,6 @@  static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 	return result;
 
-err_freqfree:
-	kfree(freq_table);
 err_unreg:
 	acpi_processor_unregister_performance(cpu);
 err_free_mask:
@@ -871,6 +863,15 @@  static int acpi_cpufreq_cpu_exit(struct cpufreq_policy *policy)
 	return 0;
 }
 
+static void acpi_cpufreq_cpu_ready(struct cpufreq_policy *policy)
+{
+	struct acpi_processor_performance *perf = per_cpu_ptr(acpi_perf_data,
+							      policy->cpu);
+
+	if (perf->states[0].core_frequency * 1000 != policy->cpuinfo.max_freq)
+		pr_warn(FW_WARN "P-state 0 is not max freq\n");
+}
+
 static int acpi_cpufreq_resume(struct cpufreq_policy *policy)
 {
 	struct acpi_cpufreq_data *data = policy->driver_data;
@@ -898,6 +899,7 @@  static struct cpufreq_driver acpi_cpufreq_driver = {
 	.bios_limit	= acpi_processor_get_bios_limit,
 	.init		= acpi_cpufreq_cpu_init,
 	.exit		= acpi_cpufreq_cpu_exit,
+	.ready		= acpi_cpufreq_cpu_ready,
 	.resume		= acpi_cpufreq_resume,
 	.name		= "acpi-cpufreq",
 	.attr		= acpi_cpufreq_attr,