diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-23 10:45:14 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-24 18:26:31 +0000 |
| commit | 3885c6bbd0c6c9cc3c8e6d4f723abc87c593b07a (patch) | |
| tree | 28462f6036dfd8fdf885bb7fd9afa510b3c90bf7 | |
| parent | 4041b85323ca00faaf8cdae22ac5cc16f1af2451 (diff) | |
drm/i915: Disable high-precision vblank timestamping for UMS
We only have sufficient information for accurate (sub-frame) timestamping
when the modesetting is under our control.
Reported-by: Chris Clayton <chris2553@googlemail.com>
Tested-by: Chris Clayton <chris2553@googlemail.com>
Reviewed-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | 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 59eb19b13b3..66796bb82d3 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); } |