[ARM] 3229/1: Remove uneeded ARM apm dependency on PM_LEGACY

Patch from Richard Purdie

ARM doesn't use ACPI so ARM's apm implementation has no need to depend
on PM_LEGACY. This patch removes that dependency.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 7 insertions, 13 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cb413109da0..16a5d522b2f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -660,7 +660,6 @@ source "kernel/power/Kconfig"
 
 config APM
         tristate "Advanced Power Management Emulation"
-        depends on PM_LEGACY
         ---help---
           APM is a BIOS specification for saving power using several different
           techniques. This is mostly useful for battery powered laptops with
diff --git a/arch/arm/kernel/apm.c b/arch/arm/kernel/apm.c
index a2843be0555..b9df1b782bb 100644
--- a/arch/arm/kernel/apm.c
+++ b/arch/arm/kernel/apm.c
@@ -20,7 +20,6 @@
 #include <linux/apm_bios.h>
 #include <linux/sched.h>
 #include <linux/pm.h>
-#include <linux/pm_legacy.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
@@ -81,6 +80,7 @@ struct apm_user {
  */
 static int suspends_pending;
 static int apm_disabled;
+static int arm_apm_active;
 
 static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
 static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
@@ -477,9 +477,9 @@ static int kapmd(void *arg)
                 apm_event_t event;
 
                 wait_event_interruptible(kapmd_wait,
-                                !queue_empty(&kapmd_queue) || !pm_active);
+                                !queue_empty(&kapmd_queue) || !arm_apm_active);
 
-                if (!pm_active)
+                if (!arm_apm_active)
                         break;
 
                 spin_lock_irq(&kapmd_queue_lock);
@@ -522,16 +522,11 @@ static int __init apm_init(void)
                 return -ENODEV;
         }
 
-        if (PM_IS_ACTIVE()) {
-                printk(KERN_NOTICE "apm: overridden by ACPI.\n");
-                return -EINVAL;
-        }
-
-        pm_active = 1;
+        arm_apm_active = 1;
 
         ret = kernel_thread(kapmd, NULL, CLONE_KERNEL);
         if (ret < 0) {
-                pm_active = 0;
+                arm_apm_active = 0;
                 return ret;
         }
 
@@ -543,7 +538,7 @@ static int __init apm_init(void)
         if (ret != 0) {
                 remove_proc_entry("apm", NULL);
 
-                pm_active = 0;
+                arm_apm_active = 0;
                 wake_up(&kapmd_wait);
                 wait_for_completion(&kapmd_exit);
         }
@@ -556,7 +551,7 @@ static void __exit apm_exit(void)
         misc_deregister(&apm_device);
         remove_proc_entry("apm", NULL);
 
-        pm_active = 0;
+        arm_apm_active = 0;
         wake_up(&kapmd_wait);
         wait_for_completion(&kapmd_exit);
 }