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[cvs-checkins] or1k/or1ksim/peripheral 16450.c

CVSROOT:	/home/oc/cvs
Module name:	or1k
Changes by:	sfurman	03/04/12 19:21:33

Modified files:
	or1ksim/peripheral: 16450.c 

Log message:
	When multiple interrupts were pending, e.g. TX buffer empty and RX
	available, reading the UART's IIR register could potentially clear a
	TX interrupt before it had been sent to the processor, thus dropping
	the interrupt permanently.
	
	Fix tested w/ both eCos and uclinux.

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