1 files changed, 39 insertions, 1 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index e03de37a750d..30238f6ff232 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -27,8 +27,10 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>
+#ifdef CONFIG_ACPI_PROCFS
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#endif
 #include <linux/power_supply.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
@@ -49,12 +51,15 @@ MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI AC Adapter Driver");
 MODULE_LICENSE("GPL");
 
+#ifdef CONFIG_ACPI_PROCFS
 extern struct proc_dir_entry *acpi_lock_ac_dir(void);
 extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
+static int acpi_ac_open_fs(struct inode *inode, struct file *file);
+#endif
 
 static int acpi_ac_add(struct acpi_device *device);
 static int acpi_ac_remove(struct acpi_device *device, int type);
-static int acpi_ac_open_fs(struct inode *inode, struct file *file);
+static int acpi_ac_resume(struct acpi_device *device);
 
 const static struct acpi_device_id ac_device_ids[] = {
         {"ACPI0003", 0},
@@ -69,6 +74,7 @@ static struct acpi_driver acpi_ac_driver = {
         .ops = {
                 .add = acpi_ac_add,
                 .remove = acpi_ac_remove,
+                .resume = acpi_ac_resume,
                 },
 };
 
@@ -80,12 +86,15 @@ struct acpi_ac {
 
 #define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);
 
+#ifdef CONFIG_ACPI_PROCFS
 static const struct file_operations acpi_ac_fops = {
         .open = acpi_ac_open_fs,
         .read = seq_read,
         .llseek = seq_lseek,
         .release = single_release,
 };
+#endif
+
 static int get_ac_property(struct power_supply *psy,
                            enum power_supply_property psp,
                            union power_supply_propval *val)
@@ -127,6 +136,7 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
         return 0;
 }
 
+#ifdef CONFIG_ACPI_PROCFS
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -206,6 +216,7 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
 
         return 0;
 }
+#endif
 
 /* --------------------------------------------------------------------------
                                    Driver Model
@@ -264,7 +275,9 @@ static int acpi_ac_add(struct acpi_device *device)
         if (result)
                 goto end;
 
+#ifdef CONFIG_ACPI_PROCFS
         result = acpi_ac_add_fs(device);
+#endif
         if (result)
                 goto end;
         ac->charger.name = acpi_device_bid(device);
@@ -287,13 +300,30 @@ static int acpi_ac_add(struct acpi_device *device)
 
       end:
         if (result) {
+#ifdef CONFIG_ACPI_PROCFS
                 acpi_ac_remove_fs(device);
+#endif
                 kfree(ac);
         }
 
         return result;
 }
 
+static int acpi_ac_resume(struct acpi_device *device)
+{
+        struct acpi_ac *ac;
+        unsigned old_state;
+        if (!device || !acpi_driver_data(device))
+                return -EINVAL;
+        ac = acpi_driver_data(device);
+        old_state = ac->state;
+        if (acpi_ac_get_state(ac))
+                return 0;
+        if (old_state != ac->state)
+                kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
+        return 0;
+}
+
 static int acpi_ac_remove(struct acpi_device *device, int type)
 {
         acpi_status status = AE_OK;
@@ -309,7 +339,9 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
                                             ACPI_ALL_NOTIFY, acpi_ac_notify);
         if (ac->charger.dev)
                 power_supply_unregister(&ac->charger);
+#ifdef CONFIG_ACPI_PROCFS
         acpi_ac_remove_fs(device);
+#endif
 
         kfree(ac);
 
@@ -323,13 +355,17 @@ static int __init acpi_ac_init(void)
         if (acpi_disabled)
                 return -ENODEV;
 
+#ifdef CONFIG_ACPI_PROCFS
         acpi_ac_dir = acpi_lock_ac_dir();
         if (!acpi_ac_dir)
                 return -ENODEV;
+#endif
 
         result = acpi_bus_register_driver(&acpi_ac_driver);
         if (result < 0) {
+#ifdef CONFIG_ACPI_PROCFS
                 acpi_unlock_ac_dir(acpi_ac_dir);
+#endif
                 return -ENODEV;
         }
 
@@ -341,7 +377,9 @@ static void __exit acpi_ac_exit(void)
 
         acpi_bus_unregister_driver(&acpi_ac_driver);
 
+#ifdef CONFIG_ACPI_PROCFS
         acpi_unlock_ac_dir(acpi_ac_dir);
+#endif
 
         return;
 }