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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>
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@ -108,7 +108,8 @@ static const int ak8975_index_to_reg[] = {
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static int ak8975_write_data(struct i2c_client *client,
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u8 reg, u8 val, u8 mask, u8 shift)
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{
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struct ak8975_data *data = i2c_get_clientdata(client);
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struct iio_dev *indio_dev = i2c_get_clientdata(client);
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struct ak8975_data *data = iio_priv(indio_dev);
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u8 regval;
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int ret;
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@ -159,7 +160,8 @@ static int ak8975_read_data(struct i2c_client *client,
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*/
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static int ak8975_setup(struct i2c_client *client)
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{
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struct ak8975_data *data = i2c_get_clientdata(client);
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struct iio_dev *indio_dev = i2c_get_clientdata(client);
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struct ak8975_data *data = iio_priv(indio_dev);
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u8 device_id;
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int ret;
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@ -509,6 +511,7 @@ static int ak8975_probe(struct i2c_client *client,
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goto exit_gpio;
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}
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data = iio_priv(indio_dev);
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i2c_set_clientdata(client, indio_dev);
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/* Perform some basic start-of-day setup of the device. */
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err = ak8975_setup(client);
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if (err < 0) {
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@ -516,7 +519,6 @@ static int ak8975_probe(struct i2c_client *client,
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goto exit_free_iio;
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}
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i2c_set_clientdata(client, indio_dev);
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data->client = client;
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mutex_init(&data->lock);
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data->eoc_irq = client->irq;
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