Re: [PATCH v5 2/4] iio: imu: st_lsm6dsx: Set buffer sampling frequency for accelerometer only

[Francesco Lavra]

On Thu, 2026-01-22 at 17:23 +0100, Francesco Lavra wrote:
> The st_lsm6dsx_hwfifo_odr_store() function, which is called when
> userspace
> writes the buffer sampling frequency sysfs attribute, calls
> st_lsm6dsx_check_odr(), which accesses the odr_table array at index
> `sensor->id`; since this array is only 2 entries long, an access for any
> sensor type other than accelerometer or gyroscope is an out-of-bounds
> access.
> 
> The motivation for being able to set a buffer frequency different from
> the
> sensor sampling frequency is to support use cases that need accurate
> event
> detection (which requires a high sampling frequency) while retrieving
> sensor data at low frequency. Since all the supported event types are
> generated from acceleration data only, do not create the buffer sampling
> frequency attribute for sensor types other than the accelerometer.
> 
> Fixes: 6b648a36c200 ("iio: imu: st_lsm6dsx: Decouple sensor ODR from FIFO
> batch data rate")

This patch didn't make it to 6.19. Would it still be OK to merge this in
the next release cycle? It technically changes userspace, but I think this
change can be put in the "no one will notice" category.