[PATCH 5/5] input: twl6040-vibra: remove mutex

[H. Nikolaus Schaller]

The mutex does not seem to be needed. twl4030-vibra doesn't
use one either.

Signed-off-by: H. Nikolaus Schaller <h...@goldelico.com>
---
 drivers/input/misc/twl6040-vibra.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/drivers/input/misc/twl6040-vibra.c 
b/drivers/input/misc/twl6040-vibra.c
index 69c5940..dcc926b 100644
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -46,7 +46,7 @@ struct vibra_info {
        struct device *dev;
        struct input_dev *input_dev;
        struct work_struct play_work;
-       struct mutex mutex;
+
        int irq;
 
        bool enabled;
@@ -182,8 +182,6 @@ static void vibra_play_work(struct work_struct *work)
        struct vibra_info *info = container_of(work,
                                struct vibra_info, play_work);
 
-       mutex_lock(&info->mutex);
-
        if (info->weak_speed || info->strong_speed) {
                if (!info->enabled)
                        twl6040_vibra_enable(info);
@@ -192,7 +190,6 @@ static void vibra_play_work(struct work_struct *work)
        } else if (info->enabled)
                twl6040_vibra_disable(info);
 
-       mutex_unlock(&info->mutex);
 }
 
 static int vibra_play(struct input_dev *input, void *data,
@@ -223,12 +220,8 @@ static void twl6040_vibra_close(struct input_dev *input)
 
        cancel_work_sync(&info->play_work);
 
-       mutex_lock(&info->mutex);
-
        if (info->enabled)
                twl6040_vibra_disable(info);
-
-       mutex_unlock(&info->mutex);
 }
 
 static int __maybe_unused twl6040_vibra_suspend(struct device *dev)
@@ -236,13 +229,9 @@ static int __maybe_unused twl6040_vibra_suspend(struct 
device *dev)
        struct platform_device *pdev = to_platform_device(dev);
        struct vibra_info *info = platform_get_drvdata(pdev);
 
-       mutex_lock(&info->mutex);
-
        if (info->enabled)
                twl6040_vibra_disable(info);
 
-       mutex_unlock(&info->mutex);
-
        return 0;
 }
 
@@ -301,8 +290,6 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       mutex_init(&info->mutex);
-
        error = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
                                          twl6040_vib_irq_handler,
                                          IRQF_ONESHOT,
-- 
2.7.3