diff options
| -rw-r--r-- | drivers/acpi/sleep.c | 32 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 4 | ||||
| -rw-r--r-- | init/main.c | 2 |
3 files changed, 18 insertions, 20 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index b718806657cd..c40fb2e81bbc 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -71,6 +71,17 @@ static int acpi_sleep_prepare(u32 acpi_state) return 0; } +static bool acpi_sleep_state_supported(u8 sleep_state) +{ + acpi_status status; + u8 type_a, type_b; + + status = acpi_get_sleep_type_data(sleep_state, &type_a, &type_b); + return ACPI_SUCCESS(status) && (!acpi_gbl_reduced_hardware + || (acpi_gbl_FADT.sleep_control.address + && acpi_gbl_FADT.sleep_status.address)); +} + #ifdef CONFIG_ACPI_SLEEP static u32 acpi_target_sleep_state = ACPI_STATE_S0; @@ -604,15 +615,9 @@ static void acpi_sleep_suspend_setup(void) { int i; - for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++) { - acpi_status status; - u8 type_a, type_b; - - status = acpi_get_sleep_type_data(i, &type_a, &type_b); - if (ACPI_SUCCESS(status)) { + for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++) + if (acpi_sleep_state_supported(i)) sleep_states[i] = 1; - } - } suspend_set_ops(old_suspend_ordering ? &acpi_suspend_ops_old : &acpi_suspend_ops); @@ -740,11 +745,7 @@ static const struct platform_hibernation_ops acpi_hibernation_ops_old = { static void acpi_sleep_hibernate_setup(void) { - acpi_status status; - u8 type_a, type_b; - - status = acpi_get_sleep_type_data(ACPI_STATE_S4, &type_a, &type_b); - if (ACPI_FAILURE(status)) + if (!acpi_sleep_state_supported(ACPI_STATE_S4)) return; hibernation_set_ops(old_suspend_ordering ? @@ -793,8 +794,6 @@ static void acpi_power_off(void) int __init acpi_sleep_init(void) { - acpi_status status; - u8 type_a, type_b; char supported[ACPI_S_STATE_COUNT * 3 + 1]; char *pos = supported; int i; @@ -806,8 +805,7 @@ int __init acpi_sleep_init(void) acpi_sleep_suspend_setup(); acpi_sleep_hibernate_setup(); - status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b); - if (ACPI_SUCCESS(status)) { + if (acpi_sleep_state_supported(ACPI_STATE_S5)) { sleep_states[ACPI_STATE_S5] = 1; pm_power_off_prepare = acpi_power_off_prepare; pm_power_off = acpi_power_off; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index cf485d928903..199b52b7c3e1 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1129,7 +1129,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif, per_cpu(cpufreq_cpu_data, j) = policy; write_unlock_irqrestore(&cpufreq_driver_lock, flags); - if (cpufreq_driver->get) { + if (cpufreq_driver->get && !cpufreq_driver->setpolicy) { policy->cur = cpufreq_driver->get(policy->cpu); if (!policy->cur) { pr_err("%s: ->get() failed\n", __func__); @@ -2143,7 +2143,7 @@ int cpufreq_update_policy(unsigned int cpu) * BIOS might change freq behind our back * -> ask driver for current freq and notify governors about a change */ - if (cpufreq_driver->get) { + if (cpufreq_driver->get && !cpufreq_driver->setpolicy) { new_policy.cur = cpufreq_driver->get(cpu); if (!policy->cur) { pr_debug("Driver did not initialize current freq"); diff --git a/init/main.c b/init/main.c index eb03090cdced..9c7fd4c9249f 100644 --- a/init/main.c +++ b/init/main.c @@ -561,7 +561,6 @@ asmlinkage void __init start_kernel(void) init_timers(); hrtimers_init(); softirq_init(); - acpi_early_init(); timekeeping_init(); time_init(); sched_clock_postinit(); @@ -613,6 +612,7 @@ asmlinkage void __init start_kernel(void) calibrate_delay(); pidmap_init(); anon_vma_init(); + acpi_early_init(); #ifdef CONFIG_X86 if (efi_enabled(EFI_RUNTIME_SERVICES)) efi_enter_virtual_mode(); |