------------------------------
Message: 10
Date: Sun, 23 Jan 2011 10:50:01 +0000
From: Chris Wilson <ch...@chris-wilson.co.uk>
Subject: [PATCH] drm/i915: Disable high-precision vblank timestamping
for UMS
To: Chris Clayton <chris2...@googlemail.com>
Cc: linux-ker...@vger.kernel.org, dri-devel@lists.freedesktop.org
Message-ID:
<1295779801-8118-1-git-send-email-ch...@chris-wilson.co.uk>
We only have sufficient information for accurate (sub-frame)
timestamping
when the modesetting is under our control.
Reported-by: Chris Clayton <chris2...@googlemail.com>
Signed-off-by: Chris Wilson <ch...@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
Oops! Have missed that. Thanks for fixing it.
Reviewed-by: Mario Kleiner <mario.klei...@tuebingen.mpg.de>
*********************************************************************
Mario Kleiner
Max Planck Institute for Biological Cybernetics
Spemannstr. 38
72076 Tuebingen
Germany
e-mail: mario.klei...@tuebingen.mpg.de
office: +49 (0)7071/601-1623
fax: +49 (0)7071/601-616
www: http://www.kyb.tuebingen.mpg.de/~kleinerm
*********************************************************************
"For a successful technology, reality must take precedence
over public relations, for Nature cannot be fooled."
(Richard Feynman)
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