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Subject[PATCH] Input: twl6040-vibra: Code cleanup in probe with devm_* conversion
Date
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>
---
drivers/input/misc/twl6040-vibra.c | 99 ++++++++++++++++-------------------
1 files changed, 45 insertions(+), 54 deletions(-)
diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
index c8a288a..ef380d8 100644
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -275,7 +275,7 @@ static int __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devinit 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 __devexit twl6040_vibra_remove(struct platform_device *pdev)
struct vibra_info *info = platform_get_drvdata(pdev);

input_unregister_device(info->input_dev);
- free_irq(info->irq, info);
regulator_bulk_free(ARRAY_SIZE(info->supplies), info->supplies);
destroy_workqueue(info->workqueue);
- kfree(info);

return 0;
}
--
1.7.8.6


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