diff options
Diffstat (limited to 'drivers/iio/pressure/bmp280-core.c')
| -rw-r--r-- | drivers/iio/pressure/bmp280-core.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index fe87d27779d9..8d0f15f27dc5 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2010 Christoph Mair <christoph.mair@gmail.com> * Copyright (c) 2012 Bosch Sensortec GmbH @@ -7,10 +8,6 @@ * * Driver for Bosch Sensortec BMP180 and BMP280 digital pressure sensor. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Datasheet: * https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP180-DS000-121.pdf * https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP280-DS001-12.pdf @@ -164,6 +161,9 @@ static int bmp280_read_calib(struct bmp280_data *data, return ret; } + /* Toss the temperature calibration data into the entropy pool */ + add_device_randomness(t_buf, sizeof(t_buf)); + calib->T1 = le16_to_cpu(t_buf[T1]); calib->T2 = le16_to_cpu(t_buf[T2]); calib->T3 = le16_to_cpu(t_buf[T3]); @@ -177,6 +177,9 @@ static int bmp280_read_calib(struct bmp280_data *data, return ret; } + /* Toss the pressure calibration data into the entropy pool */ + add_device_randomness(p_buf, sizeof(p_buf)); + calib->P1 = le16_to_cpu(p_buf[P1]); calib->P2 = le16_to_cpu(p_buf[P2]); calib->P3 = le16_to_cpu(p_buf[P3]); |