ACPI / PM: Merge do_suspend_lowlevel() into acpi_save_state_mem()

The function do_suspend_lowlevel() is specific to x86 and defined in
assembly code, so it should be called from the x86 low-level suspend
code rather than from acpi_suspend_enter().

Merge do_suspend_lowlevel() into the x86's acpi_save_state_mem() and
change the name of the latter to acpi_suspend_lowlevel(), so that the
function's purpose is better reflected by its name.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

3 files changed, 7 insertions, 4 deletions

diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 47981f0d121b..aa92684aa674 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -112,8 +112,8 @@ static inline void acpi_disable_pci(void)
         acpi_noirq_set();
 }
 
-/* Routine for saving kernel state during suspend. */
-extern int acpi_save_state_mem(void);
+/* Low-level suspend routine. */
+extern int acpi_suspend_lowlevel(void);
 
 extern unsigned long acpi_wakeup_address;
 
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index c27a483094b1..5f1b747f6ef1 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -29,14 +29,14 @@ static char temp_stack[4096];
 #endif
 
 /**
- * acpi_save_state_mem - save kernel state
+ * acpi_suspend_lowlevel - save kernel state
  *
  * Create an identity mapped page table and copy the wakeup routine to
  * low memory.
  *
  * Note that this is too late to change acpi_wakeup_address.
  */
-int acpi_save_state_mem(void)
+int acpi_suspend_lowlevel(void)
 {
         struct wakeup_header *header;
 
@@ -107,6 +107,7 @@ int acpi_save_state_mem(void)
        saved_magic = 0x123456789abcdef0L;
 #endif /* CONFIG_64BIT */
 
+        do_suspend_lowlevel();
         return 0;
 }
 
diff --git a/arch/x86/kernel/acpi/sleep.h b/arch/x86/kernel/acpi/sleep.h
index adbcbaa6f1df..31ce13f20297 100644
--- a/arch/x86/kernel/acpi/sleep.h
+++ b/arch/x86/kernel/acpi/sleep.h
@@ -14,3 +14,5 @@ extern char swsusp_pg_dir[PAGE_SIZE];
 
 extern unsigned long acpi_copy_wakeup_routine(unsigned long);
 extern void wakeup_long64(void);
+
+extern void do_suspend_lowlevel(void);