Messages in this thread Patch in this message | | | From | Chris Wilson <> | Subject | [PATCH] drm/i915: Disable high-precision vblank timestamping for UMS | Date | Sun, 23 Jan 2011 10:50:01 +0000 |
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We only have sufficient information for accurate (sub-frame) timestamping when the modesetting is under our control.
Reported-by: Chris Clayton <chris2553@googlemail.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> --- drivers/gpu/drm/i915/i915_drv.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 59eb19b..66796bb 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -752,6 +752,9 @@ static int __init i915_init(void) driver.driver_features &= ~DRIVER_MODESET; #endif + if (!(driver.driver_features & DRIVER_MODESET)) + driver.get_vblank_timestamp = NULL; + return drm_init(&driver); } -- 1.7.2.3
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