thinkpad-acpi: kill hotkey_thread_mutex

[profile/ivi/kernel-x86-ivi.git] / drivers / platform / x86 / thinkpad_acpi.c

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 9a90756..edec135 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1964,9 +1964,6 @@ struct tp_nvram_state {
 /* kthread for the hotkey poller */
 static struct task_struct *tpacpi_hotkey_task;
 
 /* kthread for the hotkey poller */
 static struct task_struct *tpacpi_hotkey_task;
 

-/* Acquired while the poller kthread is running, use to sync start/stop */
-static struct mutex hotkey_thread_mutex;
-

 /*
  * Acquire mutex to write poller control variables as an
  * atomic block.
 /*
  * Acquire mutex to write poller control variables as an
  * atomic block.


@@ -2462,8 +2459,6 @@ static int hotkey_kthread(void *data)
        unsigned int poll_freq;
        bool was_frozen;
 
        unsigned int poll_freq;
        bool was_frozen;
 

-       mutex_lock(&hotkey_thread_mutex);
-

        if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
                goto exit;
 
        if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
                goto exit;
 


@@ -2523,7 +2518,6 @@ static int hotkey_kthread(void *data)
        }
 
 exit:
        }
 
 exit:

-       mutex_unlock(&hotkey_thread_mutex);

        return 0;
 }
 
        return 0;
 }
 


@@ -2533,9 +2527,6 @@ static void hotkey_poll_stop_sync(void)
        if (tpacpi_hotkey_task) {
                kthread_stop(tpacpi_hotkey_task);
                tpacpi_hotkey_task = NULL;
        if (tpacpi_hotkey_task) {
                kthread_stop(tpacpi_hotkey_task);
                tpacpi_hotkey_task = NULL;

-               mutex_lock(&hotkey_thread_mutex);
-               /* at this point, the thread did exit */
-               mutex_unlock(&hotkey_thread_mutex);

        }
 }
 
        }
 }
 


@@ -3234,7 +3225,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
        mutex_init(&hotkey_mutex);
 
 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
        mutex_init(&hotkey_mutex);
 
 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL

-       mutex_init(&hotkey_thread_mutex);

        mutex_init(&hotkey_thread_data_mutex);
 #endif
 
        mutex_init(&hotkey_thread_data_mutex);
 #endif