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drm/radeon/kms: add irq mitigation code for sw interrupt.
authorDave Airlie <airlied@redhat.com>
Tue, 1 Dec 2009 06:04:56 +0000 (16:04 +1000)
committerDave Airlie <airlied@redhat.com>
Wed, 2 Dec 2009 04:00:13 +0000 (14:00 +1000)
We really don't need to process every irq that comes in, we only
really want to do SW irq processing when we are actually waiting for
a fence to pass. I'm not 100% sure this is race free esp on non-MSI systems
so it needs some testing.

Signed-off-by: Dave Airlie <airlied@redhat.com>

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