xen/time: Add default value of -1 for IRQ and check for that.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tue, 9 Apr 2013 01:05:15 +0000 (21:05 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tue, 16 Apr 2013 20:05:14 +0000 (16:05 -0400)
If the timer interrupt has been de-init or is just now being
initialized, the default value of -1 should be preset as
interrupt line. Check for that and if something is odd
WARN us.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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