From ad9cc622f10116046a88181e8c2f7d6a19af7fc0 Mon Sep 17 00:00:00 2001 From: Gwendal Grignou Date: Wed, 13 Mar 2019 12:40:50 +0100 Subject: [PATCH] iio: cros_ec: Add kernel-doc for cros_ec_sensors_read_lpc Document cros_ec_sensors_read_lpc, adding an additional note to explain that this is the safe function for reading the EC data. Signed-off-by: Gwendal Grignou Signed-off-by: Enric Balletbo i Serra Signed-off-by: Jonathan Cameron --- .../iio/common/cros_ec_sensors/cros_ec_sensors_core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index c770a2a809d7..eb7b0edd5da4 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -268,6 +268,17 @@ static int cros_ec_sensors_read_data_unsafe(struct iio_dev *indio_dev, return 0; } +/** + * cros_ec_sensors_read_lpc() - read acceleration data from EC shared memory. + * @indio_dev: pointer to IIO device. + * @scan_mask: bitmap of the sensor indices to scan. + * @data: location to store data. + * + * Note: this is the safe function for reading the EC data. It guarantees + * that the data sampled was not modified by the EC while being read. + * + * Return: 0 on success, -errno on failure. + */ int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev, unsigned long scan_mask, s16 *data) {