Input: twl6040-vibra - code cleanup in probe with devm_* conversion

Convert the probe to use devm_*. At the same time reorder the calls
so we will register the input device as the last step when the driver
is loaded.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

1 files changed, 45 insertions, 54 deletions

diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
index 71a28ee699f3..d1e31b8eb121 100644
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -275,7 +275,7 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
                 return -EINVAL;
         }
 
-        info = kzalloc(sizeof(*info), GFP_KERNEL);
+        info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
         if (!info) {
                 dev_err(&pdev->dev, "couldn't allocate memory\n");
                 return -ENOMEM;
@@ -309,53 +309,23 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
         if ((!info->vibldrv_res && !info->viblmotor_res) ||
             (!info->vibrdrv_res && !info->vibrmotor_res)) {
                 dev_err(info->dev, "invalid vibra driver/motor resistance\n");
-                ret = -EINVAL;
-                goto err_kzalloc;
+                return -EINVAL;
         }
 
         info->irq = platform_get_irq(pdev, 0);
         if (info->irq < 0) {
                 dev_err(info->dev, "invalid irq\n");
-                ret = -EINVAL;
-                goto err_kzalloc;
+                return -EINVAL;
         }
 
         mutex_init(&info->mutex);
 
-        info->input_dev = input_allocate_device();
-        if (info->input_dev == NULL) {
-                dev_err(info->dev, "couldn't allocate input device\n");
-                ret = -ENOMEM;
-                goto err_kzalloc;
-        }
-
-        input_set_drvdata(info->input_dev, info);
-
-        info->input_dev->name = "twl6040:vibrator";
-        info->input_dev->id.version = 1;
-        info->input_dev->dev.parent = pdev->dev.parent;
-        info->input_dev->close = twl6040_vibra_close;
-        __set_bit(FF_RUMBLE, info->input_dev->ffbit);
-
-        ret = input_ff_create_memless(info->input_dev, NULL, vibra_play);
-        if (ret < 0) {
-                dev_err(info->dev, "couldn't register vibrator to FF\n");
-                goto err_ialloc;
-        }
-
-        ret = input_register_device(info->input_dev);
-        if (ret < 0) {
-                dev_err(info->dev, "couldn't register input device\n");
-                goto err_iff;
-        }
-
-        platform_set_drvdata(pdev, info);
-
-        ret = request_threaded_irq(info->irq, NULL, twl6040_vib_irq_handler, 0,
-                                   "twl6040_irq_vib", info);
+        ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
+                                        twl6040_vib_irq_handler, 0,
+                                        "twl6040_irq_vib", info);
         if (ret) {
                 dev_err(info->dev, "VIB IRQ request failed: %d\n", ret);
-                goto err_irq;
+                return ret;
         }
 
         info->supplies[0].supply = "vddvibl";
@@ -368,7 +338,7 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
                                  ARRAY_SIZE(info->supplies), info->supplies);
         if (ret) {
                 dev_err(info->dev, "couldn't get regulators %d\n", ret);
-                goto err_regulator;
+                return ret;
         }
 
         if (vddvibl_uV) {
@@ -377,7 +347,7 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
                 if (ret) {
                         dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
                                 ret);
-                        goto err_voltage;
+                        goto err_regulator;
                 }
         }
 
@@ -387,7 +357,7 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
                 if (ret) {
                         dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
                                 ret);
-                        goto err_voltage;
+                        goto err_regulator;
                 }
         }
 
@@ -395,26 +365,49 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
         if (info->workqueue == NULL) {
                 dev_err(info->dev, "couldn't create workqueue\n");
                 ret = -ENOMEM;
-                goto err_voltage;
+                goto err_regulator;
         }
         INIT_WORK(&info->play_work, vibra_play_work);
 
+        info->input_dev = input_allocate_device();
+        if (info->input_dev == NULL) {
+                dev_err(info->dev, "couldn't allocate input device\n");
+                ret = -ENOMEM;
+                goto err_wq;
+        }
+
+        input_set_drvdata(info->input_dev, info);
+
+        info->input_dev->name = "twl6040:vibrator";
+        info->input_dev->id.version = 1;
+        info->input_dev->dev.parent = pdev->dev.parent;
+        info->input_dev->close = twl6040_vibra_close;
+        __set_bit(FF_RUMBLE, info->input_dev->ffbit);
+
+        ret = input_ff_create_memless(info->input_dev, NULL, vibra_play);
+        if (ret < 0) {
+                dev_err(info->dev, "couldn't register vibrator to FF\n");
+                goto err_ialloc;
+        }
+
+        ret = input_register_device(info->input_dev);
+        if (ret < 0) {
+                dev_err(info->dev, "couldn't register input device\n");
+                goto err_iff;
+        }
+
+        platform_set_drvdata(pdev, info);
+
         return 0;
 
-err_voltage:
-        regulator_bulk_free(ARRAY_SIZE(info->supplies), info->supplies);
-err_regulator:
-        free_irq(info->irq, info);
-err_irq:
-        input_unregister_device(info->input_dev);
-        info->input_dev = NULL;
 err_iff:
-        if (info->input_dev)
-                input_ff_destroy(info->input_dev);
+        input_ff_destroy(info->input_dev);
 err_ialloc:
         input_free_device(info->input_dev);
-err_kzalloc:
-        kfree(info);
+err_wq:
+        destroy_workqueue(info->workqueue);
+err_regulator:
+        regulator_bulk_free(ARRAY_SIZE(info->supplies), info->supplies);
         return ret;
 }
 
@@ -423,10 +416,8 @@ static int twl6040_vibra_remove(struct platform_device *pdev)
         struct vibra_info *info = platform_get_drvdata(pdev);