From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Mon, 03 Jan 2011 15:59:39 +0100
From: Stefan Kisdaroczi <kisda@domain.hid>
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Subject: [Xenomai-help] 16550A driver and 2-port pci board, irq sharing
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To: Jan Kiszka <jan.kiszka@domain.hid>
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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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