jerpelea opened a new pull request, #20267:
URL: https://github.com/apache/nuttx/pull/20267
## Summary
Fix the inverted replenishment period validation in sched_setparam().
Validate sched_priority before modifying sporadic scheduler state.
Centralize sporadic parameter validation and tick conversion.
Apply consistent validation to sched_setparam(), sched_setscheduler(),
and pthread_create().
Propagate scheduler setup failures from the spawn path.
The sched_setparam() validation condition was inverted during an earlier
refactoring, causing valid sporadic parameters to be rejected and invalid
parameters to be applied.
The sporadic parameter checks were also duplicated across several paths and
were inconsistent. In particular, pthread_create() did not validate
sched_ss_max_repl and did not enforce the scheduler implementation's 50 percent
duty-cycle restriction.
This change introduces nxsched_validate_sporadic() as the common validation
path. It also performs validation before modifying sporadic state, preventing
failed calls from leaving partially updated scheduling parameters or timers.
## Impact
RELEASE
## Testing
CI
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