1 files changed, 26 insertions, 1 deletions

diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index e7a3fe508dff..d8b0d326e452 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -192,6 +192,9 @@ static struct quirk_entry *quirks;
 
 static void set_quirks(void)
 {
+        if (!interface)
+                return;
+
         if (quirks->mailled)
                 interface->capability |= ACER_CAP_MAILLED;
 
@@ -803,11 +806,30 @@ static acpi_status get_u32(u32 *value, u32 cap)
 
 static acpi_status set_u32(u32 value, u32 cap)
 {
+        acpi_status status;
+
         if (interface->capability & cap) {
                 switch (interface->type) {
                 case ACER_AMW0:
                         return AMW0_set_u32(value, cap, interface);
                 case ACER_AMW0_V2:
+                        if (cap == ACER_CAP_MAILLED)
+                                return AMW0_set_u32(value, cap, interface);
+
+                        /*
+                         * On some models, some WMID methods don't toggle
+                         * properly. For those cases, we want to run the AMW0
+                         * method afterwards to be certain we've really toggled
+                         * the device state.
+                         */
+                        if (cap == ACER_CAP_WIRELESS ||
+                                cap == ACER_CAP_BLUETOOTH) {
+                                status = WMID_set_u32(value, cap, interface);
+                                if (ACPI_FAILURE(status))
+                                        return status;
+
+                                return AMW0_set_u32(value, cap, interface);
+                        }
                 case ACER_WMID:
                         return WMID_set_u32(value, cap, interface);
                 default:
@@ -1167,7 +1189,7 @@ static int create_debugfs(void)
         return 0;
 
 error_debugfs:
-                remove_debugfs();
+        remove_debugfs();
         return -ENOMEM;
 }
 
@@ -1218,6 +1240,8 @@ static int __init acer_wmi_init(void)
                 return -ENODEV;
         }
 
+        set_quirks();
+
         if (platform_driver_register(&acer_platform_driver)) {
                 printk(ACER_ERR "Unable to register platform driver.\n");
                 goto error_platform_register;
@@ -1248,6 +1272,7 @@ error_platform_register:
 static void __exit acer_wmi_exit(void)
 {
         remove_sysfs(acer_platform_device);
+        remove_debugfs();
         platform_device_del(acer_platform_device);
         platform_driver_unregister(&acer_platform_driver);