RTDM assertion failed RTAI 4.0 and 5.1test

Hi,

I work on RTAI3.8 using a MOXA CP114 4 serial ports card since 4 years...
I'm testing RTAI 4 (3.8.13 kernel) and RTAI5 (3.10.32 kernel) and all seems
to work fine (testsuite, simple prog).
With the same prog than I used on RTAI3.8, fd = rt_dev_open(rtserfile,
0)... rt_dev_write(...)

When I try on newer versions I have this message :

RTDM: assertion failed at /usr/src/rtai/addons/rtdm/core.c:523
(!rthal_local_irq_disabled())


And every loop I have this one :
[ 1729.398443] RTDM: assertion failed at
/usr/src/rtai/addons/rtdm/../rtdm/rtdm_driver.h:581
(CONTEXT_IS_LOCKED(context))

My script to insert modules :

insmod rtai_hal.ko
insmod rtai_sched.ko
insmod rtai_sem.ko
insmod rtai_tasklets.ko
insmod rtai_fifos.ko
insmod rtai_rtdm.ko
insmod rtai_serial.ko
rmmod rtai_serial.ko
insmod rtai_16650A.ko io=...., irq=...., baud_base=...., start_index=0

If someone could help me... what's going wrong?
Thanks

Best regards

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