From: Francesco Lavra Date: Wed, 25 Feb 2026 10:06:00 +0000 (+0100) Subject: iio: imu: st_lsm6dsx: Set FIFO ODR for accelerometer and gyroscope only X-Git-Tag: v7.0-rc7~8^2~25^2~17 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=630748afa7030b272b7bee5df857e7bcf132ed51;p=thirdparty%2Fkernel%2Fstable.git iio: imu: st_lsm6dsx: Set FIFO ODR for accelerometer and gyroscope only The st_lsm6dsx_set_fifo_odr() function, which is called when enabling and disabling the hardware FIFO, checks the contents of the hw->settings->batch array at index sensor->id, and then sets the current ODR value in sensor registers that depend on whether the register address is set in the above array element. This logic is valid for internal sensors only, i.e. the accelerometer and gyroscope; however, since commit c91c1c844ebd ("iio: imu: st_lsm6dsx: add i2c embedded controller support"), this function is called also when configuring the hardware FIFO for external sensors (i.e. sensors accessed through the sensor hub functionality), which can result in unrelated device registers being written. Add a check to the beginning of st_lsm6dsx_set_fifo_odr() so that it does not touch any registers unless it is called for internal sensors. Fixes: c91c1c844ebd ("iio: imu: st_lsm6dsx: add i2c embedded controller support") Signed-off-by: Francesco Lavra Cc: Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c index 55d877745575..1ee2fc5f5f1f 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c @@ -225,6 +225,10 @@ static int st_lsm6dsx_set_fifo_odr(struct st_lsm6dsx_sensor *sensor, const struct st_lsm6dsx_reg *batch_reg; u8 data; + /* Only internal sensors have a FIFO ODR configuration register. */ + if (sensor->id >= ARRAY_SIZE(hw->settings->batch)) + return 0; + batch_reg = &hw->settings->batch[sensor->id]; if (batch_reg->addr) { int val;