pkarashchenko commented on issue #9695:
URL: https://github.com/apache/nuttx/issues/9695#issuecomment-1620456242
The `-ECANCELED` is returned always because of nested cancelation point. The
most top `enter_cancellation_point()` is called from `open()`, so all later
calls of cancelable APIs from inside the `open()` will be a nested cancelation
points:
```
/* sem_wait() is a cancellation point */
if (enter_cancellation_point())
{
#ifdef CONFIG_CANCELLATION_POINTS
/* If there is a pending cancellation, then do not perform
* the wait. Exit now with ECANCELED.
*/
errcode = ECANCELED;
goto errout_with_cancelpt;
#endif
}
```
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