From 9410ae072f9f5763068457a85e84a156ed8d4068 Mon Sep 17 00:00:00 2001 From: Jean-Baptiste Maneyrol Date: Fri, 30 Jan 2026 16:38:47 +0100 Subject: iio: imu: inv_icm42600: fix odr switch to the same value commit c9f3a593137d862d424130343e77d4b5260a4f5a upstream. ODR switch is done in 2 steps when FIFO is on : change the ODR register value and acknowledge change when reading the FIFO ODR change flag. When we are switching to the same odr value, we end up waiting for a FIFO ODR flag that is never happening. Fix the issue by doing nothing and exiting properly when we are switching to the same ODR value. Fixes: ec74ae9fd37c ("iio: imu: inv_icm42600: add accurate timestamping") Signed-off-by: Jean-Baptiste Maneyrol Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c | 2 ++ drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c index 54760d8f92a2..0ab6eddf0543 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c @@ -651,6 +651,8 @@ static int inv_icm42600_accel_write_odr(struct iio_dev *indio_dev, return -EINVAL; conf.odr = inv_icm42600_accel_odr_conv[idx / 2]; + if (conf.odr == st->conf.accel.odr) + return 0; pm_runtime_get_sync(dev); mutex_lock(&st->lock); diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c index 7ef0a25ec74f..11339ddf1da3 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c @@ -358,6 +358,8 @@ static int inv_icm42600_gyro_write_odr(struct iio_dev *indio_dev, return -EINVAL; conf.odr = inv_icm42600_gyro_odr_conv[idx / 2]; + if (conf.odr == st->conf.gyro.odr) + return 0; pm_runtime_get_sync(dev); mutex_lock(&st->lock); -- cgit v1.2.3