On 03.01.2011 15:59, Stefan Kisdaroczi wrote: > 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 ? >
enabling CONFIG_XENO_OPT_SHIRQ did help ... sorry Stefan
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