iio: imu: inv_mpu6050: Use devm_iio_device_alloc

Using devm_iio_device_alloc makes code simpler. While at
it include missing iio.h header file and do some cleanup.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index 6a1ff80..df7f1e1 100644 (file)
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -23,6 +23,7 @@
 #include <linux/interrupt.h>
 #include <linux/kfifo.h>
 #include <linux/spinlock.h>
+#include <linux/iio/iio.h>
 #include "inv_mpu_iio.h"
 
 /*
@@ -663,16 +664,13 @@ static int inv_mpu_probe(struct i2c_client *client,
        int result;
 
        if (!i2c_check_functionality(client->adapter,
-               I2C_FUNC_SMBUS_I2C_BLOCK)) {
+               I2C_FUNC_SMBUS_I2C_BLOCK))
+               return -ENOSYS;
+
+       indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));
+       if (!indio_dev)
+               return -ENOMEM;
 
-               result = -ENOSYS;
-               goto out_no_free;
-       }
-       indio_dev = iio_device_alloc(sizeof(*st));
-       if (indio_dev == NULL) {
-               result =  -ENOMEM;
-               goto out_no_free;
-       }
        st = iio_priv(indio_dev);
        st->client = client;
        st->plat_data = *(struct inv_mpu6050_platform_data
@@ -680,13 +678,13 @@ static int inv_mpu_probe(struct i2c_client *client,
        /* power is turned on inside check chip type*/
        result = inv_check_and_setup_chip(st, id);
        if (result)
-               goto out_free;
+               return result;
 
        result = inv_mpu6050_init_config(indio_dev);
        if (result) {
                dev_err(&client->dev,
                        "Could not initialize device.\n");
-               goto out_free;
+               return result;
        }
 
        i2c_set_clientdata(client, indio_dev);
@@ -705,7 +703,7 @@ static int inv_mpu_probe(struct i2c_client *client,
        if (result) {
                dev_err(&st->client->dev, "configure buffer fail %d\n",
                                result);
-               goto out_free;
+               return result;
        }
        result = inv_mpu6050_probe_trigger(indio_dev);
        if (result) {
@@ -727,10 +725,6 @@ out_remove_trigger:
        inv_mpu6050_remove_trigger(st);
 out_unreg_ring:
        iio_triggered_buffer_cleanup(indio_dev);
-out_free:
-       iio_device_free(indio_dev);
-out_no_free:
-
        return result;
 }
 
@@ -742,7 +736,6 @@ static int inv_mpu_remove(struct i2c_client *client)
        iio_device_unregister(indio_dev);
        inv_mpu6050_remove_trigger(st);
        iio_triggered_buffer_cleanup(indio_dev);
-       iio_device_free(indio_dev);
 
        return 0;
 }