iio: magn: ak8975: fix unnecessary casting between char* and const char*

Use const char* instead of casting const char* to char*.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
index a235792..bf5ef07 100644 (file)
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -477,8 +477,8 @@ static const struct acpi_device_id ak_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, ak_acpi_match);
 
-static char *ak8975_match_acpi_device(struct device *dev,
-                               enum asahi_compass_chipset *chipset)
+static const char *ak8975_match_acpi_device(struct device *dev,
+                                           enum asahi_compass_chipset *chipset)
 {
        const struct acpi_device_id *id;
 
@@ -487,7 +487,7 @@ static char *ak8975_match_acpi_device(struct device *dev,
                return NULL;
        *chipset = (int)id->driver_data;
 
-       return (char *)dev_name(dev);
+       return dev_name(dev);
 }
 
 static int ak8975_probe(struct i2c_client *client,
@@ -497,7 +497,7 @@ static int ak8975_probe(struct i2c_client *client,
        struct iio_dev *indio_dev;
        int eoc_gpio;
        int err;
-       char *name = NULL;
+       const char *name = NULL;
 
        /* Grab and set up the supplied GPIO. */
        if (client->dev.platform_data)
@@ -539,7 +539,7 @@ static int ak8975_probe(struct i2c_client *client,
        if (id) {
                data->chipset =
                        (enum asahi_compass_chipset)(id->driver_data);
-               name = (char *) id->name;
+               name = id->name;
        } else if (ACPI_HANDLE(&client->dev))
                name = ak8975_match_acpi_device(&client->dev, &data->chipset);
        else