4.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yong Li <redacted>

commit 590b92a30242dd3f73de3d9a51d9924f1ab33e93 upstream.

Without this, the iio:deviceX is missing in the /sys/bus/i2c/devices/0-0039
Some userspace tools use this path to identify a specific instance of the
device.

Signed-off-by: Yong Li <redacted>
Reviewed-By: Matt Ranostay <redacted>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/iio/light/apds9960.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/iio/light/apds9960.c
+++ b/drivers/iio/light/apds9960.c

@@ -1006,6 +1006,7 @@ static int apds9960_probe(struct i2c_cli
 
 	iio_device_attach_buffer(indio_dev, buffer);
 
+	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &apds9960_info;
 	indio_dev->name = APDS9960_DRV_NAME;
 	indio_dev->channels = apds9960_channels;