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drm/nouveau: fix regression in vblanking
authorMaarten Lankhorst <maarten.lankhorst@canonical.com>
Tue, 5 Mar 2013 13:59:26 +0000 (14:59 +0100)
committerBen Skeggs <bskeggs@redhat.com>
Sun, 10 Mar 2013 22:43:00 +0000 (08:43 +1000)
nv50_vblank_enable/disable got switched from NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_0 (4) << head to 1 << head, which is wrong.

4 << head is the correct value.

Fixes regression with vblanking since 1d7c71a3e2f77 "drm/nouveau/disp: port vblank handling to event interface"

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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