From: Jean-Baptiste Maneyrol jean-baptiste.maneyrol@tdk.com
[ Upstream commit dfdc31e7ccf3ac1d5ec01d5120c71e14745e3dd8 ]
Temperature sensor returns the temperature of the mechanical parts of the chip. If both accel and gyro are off, the temperature sensor is also automatically turned off and returns invalid data.
In this case, returning -EBUSY error code is better then -EINVAL and indicates userspace that it needs to retry reading temperature in another context.
Fixes: bc3eb0207fb5 ("iio: imu: inv_icm42600: add temperature sensor support") Signed-off-by: Jean-Baptiste Maneyrol jean-baptiste.maneyrol@tdk.com Cc: stable@vger.kernel.org Reviewed-by: Andy Shevchenko andy@kernel.org Reviewed-by: Sean Nyekjaer sean@geanix.com Link: https://patch.msgid.link/20250808-inv-icm42600-change-temperature-error-code... Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c index 8b15afca498c..271a4788604a 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c @@ -32,8 +32,12 @@ static int inv_icm42600_temp_read(struct inv_icm42600_state *st, s16 *temp) goto exit;
*temp = (s16)be16_to_cpup(raw); + /* + * Temperature data is invalid if both accel and gyro are off. + * Return -EBUSY in this case. + */ if (*temp == INV_ICM42600_DATA_INVALID) - ret = -EINVAL; + ret = -EBUSY;
exit: mutex_unlock(&st->lock);