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cpuidle: Change :enter_dead() driver callback return type to void

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After a previous change, cpuidle_play_dead(), which is the only caller
of idle state :enter_dead() callbacks, ignores their return values, so
they may as well be void.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://patch.msgid.link/2285569.iZASKD2KPV@rjwysocki.net
This commit is contained in:
Rafael J. Wysocki 2024-11-15 22:00:25 +01:00
parent f65ee094ed
commit 9cf9f2e70b
2 changed files with 3 additions and 6 deletions
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7
drivers/acpi/processor_idle.c
View File

@ -578,7 +578,7 @@ static void __cpuidle acpi_idle_do_entry(struct acpi_processor_cx *cx)
* @dev: the target CPU
* @index: the index of suggested state
*/
static int acpi_idle_play_dead(struct cpuidle_device *dev, int index)
static void acpi_idle_play_dead(struct cpuidle_device *dev, int index)
{
struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
@ -591,11 +591,8 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index)
else if (cx->entry_method == ACPI_CSTATE_SYSTEMIO) {
io_idle(cx->address);
} else
return -ENODEV;
return;
}
/* Never reached */
return 0;
}
static __always_inline bool acpi_idle_fallback_to_c1(struct acpi_processor *pr)

2
include/linux/cpuidle.h
View File

@ -61,7 +61,7 @@ struct cpuidle_state {
struct cpuidle_driver *drv,
int index);
int (*enter_dead) (struct cpuidle_device *dev, int index);
void (*enter_dead) (struct cpuidle_device *dev, int index);
/*
* CPUs execute ->enter_s2idle with the local tick or entire timekeeping