PM: Rework struct platform_suspend_ops

There is no reason why the .prepare() and .finish() methods in 'struct
platform_suspend_ops' should take any arguments, since architectures don't use
these methods' argument in any practically meaningful way (ie.  either the
target system sleep state is conveyed to the platform by .set_target(), or
there is only one suspend state supported and it is indicated to the PM core
by .valid(), or .prepare() and .finish() aren't defined at all).   There also
is no reason why .finish() should return any result.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 3271850a1f35..c58dd0bb5506 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -85,13 +85,12 @@ static int acpi_pm_set_target(suspend_state_t pm_state)
 
 /**
  *      acpi_pm_prepare - Do preliminary suspend work.
- *      @pm_state: ignored
  *
  *      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(suspend_state_t pm_state)
+static int acpi_pm_prepare(void)
 {
         int error = acpi_sleep_prepare(acpi_target_sleep_state);
 
@@ -160,13 +159,12 @@ static int acpi_pm_enter(suspend_state_t pm_state)
 
 /**
  *      acpi_pm_finish - Finish up suspend sequence.
- *      @pm_state: ignored
  *
  *      This is called after we wake back up (or if entering the sleep state
  *      failed). 
  */
 
-static int acpi_pm_finish(suspend_state_t pm_state)
+static void acpi_pm_finish(void)
 {
         u32 acpi_state = acpi_target_sleep_state;
 
@@ -184,7 +182,6 @@ static int acpi_pm_finish(suspend_state_t pm_state)
                 init_8259A(0);
         }
 #endif
-        return 0;
 }
 
 static int acpi_pm_state_valid(suspend_state_t pm_state)