iio: dac: ad7303: Complete 'struct ad7303_state' doc

Fixes the following W=1 kernel build warning(s):

 drivers/iio/dac/ad7303.c:49: warning: Function parameter or member 'vdd_reg' not described in 'ad7303_state'
 drivers/iio/dac/ad7303.c:49: warning: Function parameter or member 'vref_reg' not described in 'ad7303_state'
 drivers/iio/dac/ad7303.c:49: warning: Function parameter or member 'lock' not described in 'ad7303_state'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20200716135928.1456727-31-lee.jones@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c
index 20c85c2..2e46def 100644 (file)
--- a/drivers/iio/dac/ad7303.c
+++ b/drivers/iio/dac/ad7303.c
@@ -30,6 +30,9 @@
  * @spi:               the device for this driver instance
  * @config:            cached config register value
  * @dac_cache:         current DAC raw value (chip does not support readback)
+ * @vdd_reg:           reference to VDD regulator
+ * @vref_reg:          reference to VREF regulator
+ * @lock:              protect writes and cache updates
  * @data:              spi transfer buffer
  */