diff options
Diffstat (limited to 'drivers/acpi/sleep')
-rw-r--r-- | drivers/acpi/sleep/main.c | 111 |
1 files changed, 34 insertions, 77 deletions
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c index d2f71a54726..c3b0cd88d09 100644 --- a/drivers/acpi/sleep/main.c +++ b/drivers/acpi/sleep/main.c @@ -26,21 +26,6 @@ u8 sleep_states[ACPI_S_STATE_COUNT]; #ifdef CONFIG_PM_SLEEP static u32 acpi_target_sleep_state = ACPI_STATE_S0; -static bool acpi_sleep_finish_wake_up; - -/* - * ACPI 2.0 and later want us to execute _PTS after suspending devices, so we - * allow the user to request that behavior by using the 'acpi_new_pts_ordering' - * kernel command line option that causes the following variable to be set. - */ -static bool new_pts_ordering; - -static int __init acpi_new_pts_ordering(char *str) -{ - new_pts_ordering = true; - return 1; -} -__setup("acpi_new_pts_ordering", acpi_new_pts_ordering); #endif static int acpi_sleep_prepare(u32 acpi_state) @@ -66,7 +51,7 @@ static int acpi_sleep_prepare(u32 acpi_state) } #ifdef CONFIG_SUSPEND -static struct platform_suspend_ops acpi_pm_ops; +static struct platform_suspend_ops acpi_suspend_ops; extern void do_suspend_lowlevel(void); @@ -80,25 +65,17 @@ static u32 acpi_suspend_states[] = { static int init_8259A_after_S1; /** - * acpi_pm_begin - Set the target system sleep state to the state + * acpi_suspend_begin - Set the target system sleep state to the state * associated with given @pm_state, if supported. */ -static int acpi_pm_begin(suspend_state_t pm_state) +static int acpi_suspend_begin(suspend_state_t pm_state) { u32 acpi_state = acpi_suspend_states[pm_state]; int error = 0; if (sleep_states[acpi_state]) { acpi_target_sleep_state = acpi_state; - if (new_pts_ordering) - return 0; - - error = acpi_sleep_prepare(acpi_state); - if (error) - acpi_target_sleep_state = ACPI_STATE_S0; - else - acpi_sleep_finish_wake_up = true; } else { printk(KERN_ERR "ACPI does not support this state: %d\n", pm_state); @@ -108,29 +85,26 @@ static int acpi_pm_begin(suspend_state_t pm_state) } /** - * acpi_pm_prepare - Do preliminary suspend work. + * acpi_suspend_prepare - Do preliminary suspend work. * * If necessary, set the firmware waking vector and do arch-specific * nastiness to get the wakeup code to the waking vector. */ -static int acpi_pm_prepare(void) +static int acpi_suspend_prepare(void) { - if (new_pts_ordering) { - int error = acpi_sleep_prepare(acpi_target_sleep_state); + int error = acpi_sleep_prepare(acpi_target_sleep_state); - if (error) { - acpi_target_sleep_state = ACPI_STATE_S0; - return error; - } - acpi_sleep_finish_wake_up = true; + if (error) { + acpi_target_sleep_state = ACPI_STATE_S0; + return error; } return ACPI_SUCCESS(acpi_hw_disable_all_gpes()) ? 0 : -EFAULT; } /** - * acpi_pm_enter - Actually enter a sleep state. + * acpi_suspend_enter - Actually enter a sleep state. * @pm_state: ignored * * Flush caches and go to sleep. For STR we have to call arch-specific @@ -138,7 +112,7 @@ static int acpi_pm_prepare(void) * It's unfortunate, but it works. Please fix if you're feeling frisky. */ -static int acpi_pm_enter(suspend_state_t pm_state) +static int acpi_suspend_enter(suspend_state_t pm_state) { acpi_status status = AE_OK; unsigned long flags = 0; @@ -195,13 +169,13 @@ static int acpi_pm_enter(suspend_state_t pm_state) } /** - * acpi_pm_finish - Instruct the platform to leave a sleep state. + * acpi_suspend_finish - Instruct the platform to leave a sleep state. * * This is called after we wake back up (or if entering the sleep state * failed). */ -static void acpi_pm_finish(void) +static void acpi_suspend_finish(void) { u32 acpi_state = acpi_target_sleep_state; @@ -212,7 +186,6 @@ static void acpi_pm_finish(void) acpi_set_firmware_waking_vector((acpi_physical_address) 0); acpi_target_sleep_state = ACPI_STATE_S0; - acpi_sleep_finish_wake_up = false; #ifdef CONFIG_X86 if (init_8259A_after_S1) { @@ -223,20 +196,19 @@ static void acpi_pm_finish(void) } /** - * acpi_pm_end - Finish up suspend sequence. + * acpi_suspend_end - Finish up suspend sequence. */ -static void acpi_pm_end(void) +static void acpi_suspend_end(void) { /* - * This is necessary in case acpi_pm_finish() is not called directly - * during a failing transition to a sleep state. + * This is necessary in case acpi_suspend_finish() is not called during a + * failing transition to a sleep state. */ - if (acpi_sleep_finish_wake_up) - acpi_pm_finish(); + acpi_target_sleep_state = ACPI_STATE_S0; } -static int acpi_pm_state_valid(suspend_state_t pm_state) +static int acpi_suspend_state_valid(suspend_state_t pm_state) { u32 acpi_state; @@ -252,13 +224,13 @@ static int acpi_pm_state_valid(suspend_state_t pm_state) } } -static struct platform_suspend_ops acpi_pm_ops = { - .valid = acpi_pm_state_valid, - .begin = acpi_pm_begin, - .prepare = acpi_pm_prepare, - .enter = acpi_pm_enter, - .finish = acpi_pm_finish, - .end = acpi_pm_end, +static struct platform_suspend_ops acpi_suspend_ops = { + .valid = acpi_suspend_state_valid, + .begin = acpi_suspend_begin, + .prepare = acpi_suspend_prepare, + .enter = acpi_suspend_enter, + .finish = acpi_suspend_finish, + .end = acpi_suspend_end, }; /* @@ -285,31 +257,18 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { #ifdef CONFIG_HIBERNATION static int acpi_hibernation_begin(void) { - int error; - acpi_target_sleep_state = ACPI_STATE_S4; - if (new_pts_ordering) - return 0; - error = acpi_sleep_prepare(ACPI_STATE_S4); - if (error) - acpi_target_sleep_state = ACPI_STATE_S0; - else - acpi_sleep_finish_wake_up = true; - - return error; + return 0; } static int acpi_hibernation_prepare(void) { - if (new_pts_ordering) { - int error = acpi_sleep_prepare(ACPI_STATE_S4); + int error = acpi_sleep_prepare(ACPI_STATE_S4); - if (error) { - acpi_target_sleep_state = ACPI_STATE_S0; - return error; - } - acpi_sleep_finish_wake_up = true; + if (error) { + acpi_target_sleep_state = ACPI_STATE_S0; + return error; } return ACPI_SUCCESS(acpi_hw_disable_all_gpes()) ? 0 : -EFAULT; @@ -353,17 +312,15 @@ static void acpi_hibernation_finish(void) acpi_set_firmware_waking_vector((acpi_physical_address) 0); acpi_target_sleep_state = ACPI_STATE_S0; - acpi_sleep_finish_wake_up = false; } static void acpi_hibernation_end(void) { /* * This is necessary in case acpi_hibernation_finish() is not called - * directly during a failing transition to the sleep state. + * during a failing transition to the sleep state. */ - if (acpi_sleep_finish_wake_up) - acpi_hibernation_finish(); + acpi_target_sleep_state = ACPI_STATE_S0; } static int acpi_hibernation_pre_restore(void) @@ -535,7 +492,7 @@ int __init acpi_sleep_init(void) } } - suspend_set_ops(&acpi_pm_ops); + suspend_set_ops(&acpi_suspend_ops); #endif #ifdef CONFIG_HIBERNATION |