staging: iio: ak8975: Remove i2c client data corruption
i2c client data set is of type struct indio_dev pointer and hence the
pointer returned from i2c_get_clientdata() should be assigned to
an object of type struct indio_dev and not to an object of type
struct ak8975_data.
Also in ak8975_probe() client data should be set first
before calling ak8975_setup() as it references the client data.
Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
CC: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/iio/magnetometer/ak8975.c b/drivers/staging/iio/magnetometer/ak8975.c
index d5ddac3..ebc2d08 100644
--- a/drivers/staging/iio/magnetometer/ak8975.c
+++ b/drivers/staging/iio/magnetometer/ak8975.c
@@ -108,7 +108,8 @@
static int ak8975_write_data(struct i2c_client *client,
u8 reg, u8 val, u8 mask, u8 shift)
{
- struct ak8975_data *data = i2c_get_clientdata(client);
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct ak8975_data *data = iio_priv(indio_dev);
u8 regval;
int ret;
@@ -159,7 +160,8 @@
*/
static int ak8975_setup(struct i2c_client *client)
{
- struct ak8975_data *data = i2c_get_clientdata(client);
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct ak8975_data *data = iio_priv(indio_dev);
u8 device_id;
int ret;
@@ -509,6 +511,7 @@
goto exit_gpio;
}
data = iio_priv(indio_dev);
+ i2c_set_clientdata(client, indio_dev);
/* Perform some basic start-of-day setup of the device. */
err = ak8975_setup(client);
if (err < 0) {
@@ -516,7 +519,6 @@
goto exit_free_iio;
}
- i2c_set_clientdata(client, indio_dev);
data->client = client;
mutex_init(&data->lock);
data->eoc_irq = client->irq;