Hi Jan, I try to add support for the Moxa CP132 RS422 dualport pci board to the 16550A driver. In the function rt_16550_open() the call to rtdm_irq_request() fails with EBUSY (-16) for the second port.
Looking at the source the driver seems to be able to handle multiple serial ports with the same (shared) IRQ. Any hints ? Stefan x86 32bit, xenomai-2.5.5, linux 2.6.32, ipipe 2.7-03, examples/cross-link app
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