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(parent: 8d5203c) | patch

author	Chris Wilson <chris@chris-wilson.co.uk>
	Mon, 13 Dec 2010 16:54:50 +0000 (16:54 +0000)
committer	Chris Wilson <chris@chris-wilson.co.uk>
	Tue, 14 Dec 2010 11:34:46 +0000 (11:34 +0000)
commit	b13c2b96bf15b9dd0f1a45fd788f3a3025c5aec6
tree	6eb68ba8f5e4ec977efc3e087435ef272534915c	tree \| snapshot (tar.gz zip)
parent	8d5203ca62539c6ab36a5bc2402c2de1de460e30	commit \| diff

drm/i915/ringbuffer: Make IRQ refcnting atomic

In order to enforce the correct memory barriers for irq get/put, we need
to perform the actual counting using atomic operations.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>