thinkpad-acpi: fix poll thread auto-start

The driver was not starting the NVRAM polling thread if the input
device was bound immediately after registration.

This fixes:
http://bugzilla.kernel.org/show_bug.cgi?id=15118

Reported-by: Florian Zumbiehl <florz@florz.de>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: stable@kernel.org

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 06657b7..933bcc4 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2607,16 +2607,11 @@ static int hotkey_inputdev_open(struct input_dev *dev)
 {
        switch (tpacpi_lifecycle) {
        case TPACPI_LIFE_INIT:
-               /*
-                * hotkey_init will call hotkey_poll_setup_safe
-                * at the appropriate moment
-                */
-               return 0;
-       case TPACPI_LIFE_EXITING:
-               return -EBUSY;
        case TPACPI_LIFE_RUNNING:
                hotkey_poll_setup_safe(false);
                return 0;
+       case TPACPI_LIFE_EXITING:
+               return -EBUSY;
        }
 
        /* Should only happen if tpacpi_lifecycle is corrupt */
@@ -2627,7 +2622,7 @@ static int hotkey_inputdev_open(struct input_dev *dev)
 static void hotkey_inputdev_close(struct input_dev *dev)
 {
        /* disable hotkey polling when possible */
-       if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING &&
+       if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
            !(hotkey_source_mask & hotkey_driver_mask))
                hotkey_poll_setup_safe(false);
 }
@@ -9038,6 +9033,9 @@ static int __init thinkpad_acpi_module_init(void)
                        return ret;
                }
        }
+
+       tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
+
        ret = input_register_device(tpacpi_inputdev);
        if (ret < 0) {
                printk(TPACPI_ERR "unable to register input device\n");
@@ -9047,7 +9045,6 @@ static int __init thinkpad_acpi_module_init(void)
                tp_features.input_device_registered = 1;
        }
 
-       tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
        return 0;
 }