I have 7 PXIe-8431/16 serial modules in my PXI system. My controller is running NI Linux RT. 2 of the 7 modules are initializing ok, but the other 5 are giving the following error:
[ 3.835107] niserial 0000:15:00.0: Couldn't register serial port 0, irq 31, type 2, error -28
When I view the system remotely from MAX, all 7 modules are showing up but only 2 of them are expandable to view the 16 channels. I know 112 serial channels is a lot, but I cannot tell if this is a driver issue, a HW issue or an OS issue. Does anyone know how to solve this?
