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Merge back cpufreq changes for v5.5.

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This commit is contained in:
Rafael J. Wysocki 2019-11-10 17:50:26 +01:00
commit eb9809b94d
3 changed files with 38 additions and 20 deletions
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11
drivers/cpufreq/cpufreq.c
View File

@ -933,6 +933,9 @@ static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
struct freq_attr *fattr = to_attr(attr); struct freq_attr *fattr = to_attr(attr);
ssize_t ret; ssize_t ret;
if (!fattr->show)
return -EIO;
down_read(&policy->rwsem); down_read(&policy->rwsem);
ret = fattr->show(policy, buf); ret = fattr->show(policy, buf);
up_read(&policy->rwsem); up_read(&policy->rwsem);
@ -947,6 +950,9 @@ static ssize_t store(struct kobject *kobj, struct attribute *attr,
struct freq_attr *fattr = to_attr(attr); struct freq_attr *fattr = to_attr(attr);
ssize_t ret = -EINVAL; ssize_t ret = -EINVAL;
if (!fattr->store)
return -EIO;
/* /*
* cpus_read_trylock() is used here to work around a circular lock * cpus_read_trylock() is used here to work around a circular lock
* dependency problem with respect to the cpufreq_register_driver(). * dependency problem with respect to the cpufreq_register_driver().
@ -2385,7 +2391,10 @@ int cpufreq_set_policy(struct cpufreq_policy *policy,
new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN); new_policy->min = freq_qos_read_value(&policy->constraints, FREQ_QOS_MIN);
new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX); new_policy->max = freq_qos_read_value(&policy->constraints, FREQ_QOS_MAX);
/* verify the cpu speed can be set within this limit */ /*
* Verify that the CPU speed can be set within these limits and make sure
* that min <= max.
*/
ret = cpufreq_driver->verify(new_policy); ret = cpufreq_driver->verify(new_policy);
if (ret) if (ret)
return ret; return ret;

30
drivers/cpufreq/intel_pstate.c
View File

@ -2662,21 +2662,21 @@ enum {
/* Hardware vendor-specific info that has its own power management modes */ /* Hardware vendor-specific info that has its own power management modes */
static struct acpi_platform_list plat_info[] __initdata = { static struct acpi_platform_list plat_info[] __initdata = {
{"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0, PSS}, {"HP ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, NULL, PSS},
{"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4-2L ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4-2B ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X3-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X3-2L ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X3-2B ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "X6-2 ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, 0, PPC}, {"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, NULL, PPC},
{ } /* End */ { } /* End */
}; };

17
drivers/cpufreq/powernv-cpufreq.c
View File

@ -1041,9 +1041,14 @@ static struct cpufreq_driver powernv_cpufreq_driver = {
static int init_chip_info(void) static int init_chip_info(void)
{ {
unsigned int chip[256]; unsigned int *chip;
unsigned int cpu, i; unsigned int cpu, i;
unsigned int prev_chip_id = UINT_MAX; unsigned int prev_chip_id = UINT_MAX;
int ret = 0;
chip = kcalloc(num_possible_cpus(), sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
for_each_possible_cpu(cpu) { for_each_possible_cpu(cpu) {
unsigned int id = cpu_to_chip_id(cpu); unsigned int id = cpu_to_chip_id(cpu);
@ -1055,8 +1060,10 @@ static int init_chip_info(void)
} }
chips = kcalloc(nr_chips, sizeof(struct chip), GFP_KERNEL); chips = kcalloc(nr_chips, sizeof(struct chip), GFP_KERNEL);
if (!chips) if (!chips) {
return -ENOMEM; ret = -ENOMEM;
goto free_and_return;
}
for (i = 0; i < nr_chips; i++) { for (i = 0; i < nr_chips; i++) {
chips[i].id = chip[i]; chips[i].id = chip[i];
@ -1066,7 +1073,9 @@ static int init_chip_info(void)
per_cpu(chip_info, cpu) = &chips[i]; per_cpu(chip_info, cpu) = &chips[i];
} }
return 0; free_and_return:
kfree(chip);
return ret;
} }
static inline void clean_chip_info(void) static inline void clean_chip_info(void)