Input: tsc2005 - convert driver to use devm_*

Simplify the driver by using managed resources for memory allocation of
internal structure, input device allocation and irq request.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
index 520e673..d981e49 100644 (file)
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -604,12 +604,13 @@ static int tsc2005_probe(struct spi_device *spi)
        if (error)
                return error;
 
-       ts = kzalloc(sizeof(*ts), GFP_KERNEL);
-       input_dev = input_allocate_device();
-       if (!ts || !input_dev) {
-               error = -ENOMEM;
-               goto err_free_mem;
-       }
+       ts = devm_kzalloc(&spi->dev, sizeof(*ts), GFP_KERNEL);
+       if (!ts)
+               return -ENOMEM;
+
+       input_dev = devm_input_allocate_device(&spi->dev);
+       if (!input_dev)
+               return -ENOMEM;
 
        ts->spi = spi;
        ts->idev = input_dev;
@@ -649,12 +650,13 @@ static int tsc2005_probe(struct spi_device *spi)
        /* Ensure the touchscreen is off */
        tsc2005_stop_scan(ts);
 
-       error = request_threaded_irq(spi->irq, NULL, tsc2005_irq_thread,
-                                    IRQF_TRIGGER_RISING | IRQF_ONESHOT,
-                                    "tsc2005", ts);
+       error = devm_request_threaded_irq(&spi->dev, spi->irq, NULL,
+                                         tsc2005_irq_thread,
+                                         IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+                                         "tsc2005", ts);
        if (error) {
                dev_err(&spi->dev, "Failed to request irq, err: %d\n", error);
-               goto err_free_mem;
+               return error;
        }
 
        spi_set_drvdata(spi, ts);
@@ -662,7 +664,7 @@ static int tsc2005_probe(struct spi_device *spi)
        if (error) {
                dev_err(&spi->dev,
                        "Failed to create sysfs attributes, err: %d\n", error);
-               goto err_clear_drvdata;
+               return error;
        }
 
        error = input_register_device(ts->idev);
@@ -677,23 +679,12 @@ static int tsc2005_probe(struct spi_device *spi)
 
 err_remove_sysfs:
        sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
-err_clear_drvdata:
-       free_irq(spi->irq, ts);
-err_free_mem:
-       input_free_device(input_dev);
-       kfree(ts);
        return error;
 }
 
 static int tsc2005_remove(struct spi_device *spi)
 {
-       struct tsc2005 *ts = spi_get_drvdata(spi);
-
-       sysfs_remove_group(&ts->spi->dev.kobj, &tsc2005_attr_group);
-
-       free_irq(ts->spi->irq, ts);
-       input_unregister_device(ts->idev);
-       kfree(ts);
+       sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
 
        return 0;
 }