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* [Xenomai-help] 16550A driver and 2-port pci board, irq sharing
@ 2011-01-03 14:59 Stefan Kisdaroczi
  2011-01-03 16:55 ` Stefan Kisdaroczi
  0 siblings, 1 reply; 2+ messages in thread
From: Stefan Kisdaroczi @ 2011-01-03 14:59 UTC (permalink / raw)
  To: Jan Kiszka; +Cc: xenomai@xenomai.org

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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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2011-01-03 14:59 [Xenomai-help] 16550A driver and 2-port pci board, irq sharing Stefan Kisdaroczi
2011-01-03 16:55 ` Stefan Kisdaroczi

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