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Merge back cpufreq changes for v5.5.
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commit
eb9809b94d
@ -933,6 +933,9 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
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struct freq_attr *fattr = to_attr(attr);
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ssize_t ret;
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if (!fattr->show)
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return -EIO;
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down_read(&policy->rwsem);
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ret = fattr->show(policy, buf);
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up_read(&policy->rwsem);
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@ -947,6 +950,9 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
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struct freq_attr *fattr = to_attr(attr);
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ssize_t ret = -EINVAL;
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if (!fattr->store)
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return -EIO;
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/*
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* cpus_read_trylock() is used here to work around a circular lock
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* dependency problem with respect to the cpufreq_register_driver().
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@ -2385,7 +2391,10 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
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new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
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new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX);
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/* verify the cpu speed can be set within this limit */
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/*
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* Verify that the CPU speed can be set within these limits and make sure
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* that min <= max.
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*/
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ret = cpufreq_driver->verify(new_policy);
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if (ret)
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return ret;
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@ -2662,21 +2662,21 @@ enum {
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/* Hardware vendor-specific info that has its own power management modes */
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static struct acpi_platform_list plat_info[] __initdata = {
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{"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0, PSS},
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{"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
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{"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, NULL, PSS},
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{"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
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{ } /* End */
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};
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@ -1041,9 +1041,14 @@ static struct cpufreq_driver powernv_cpufreq_driver = {
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static int init_chip_info(void)
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{
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unsigned int chip[256];
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unsigned int *chip;
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unsigned int cpu, i;
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unsigned int prev_chip_id = UINT_MAX;
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int ret = 0;
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chip = kcalloc(num_possible_cpus(), sizeof(*chip), GFP_KERNEL);
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if (!chip)
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return -ENOMEM;
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for_each_possible_cpu(cpu) {
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unsigned int id = cpu_to_chip_id(cpu);
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@ -1055,8 +1060,10 @@ static int init_chip_info(void)
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}
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chips = kcalloc(nr_chips, sizeof(struct chip), GFP_KERNEL);
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if (!chips)
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return -ENOMEM;
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if (!chips) {
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ret = -ENOMEM;
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goto free_and_return;
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}
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for (i = 0; i < nr_chips; i++) {
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chips[i].id = chip[i];
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@ -1066,7 +1073,9 @@ static int init_chip_info(void)
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per_cpu(chip_info, cpu) = &chips[i];
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}
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return 0;
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free_and_return:
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kfree(chip);
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return ret;
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}
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static inline void clean_chip_info(void)
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