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xen/evtchn: track enabled state for each port
author
Jeremy Fitzhardinge
<jeremy.fitzhardinge@citrix.com>
Fri, 18 Sep 2009 23:31:22 +0000
(16:31 -0700)
committer
Jeremy Fitzhardinge
<jeremy.fitzhardinge@citrix.com>
Sat, 19 Sep 2009 00:13:14 +0000
(17:13 -0700)
enable/disable_irq() complain if the enables/disables are unbalanced,
so keep track of the state and avoid redundant enables.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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