This reverts commit e91abf80a0998f326107874c88d549f94839f13c.
Since
commit 24e4a8c3e8868874835b0f1ad6dd417341e99822
Author: John Stultz <john.stultz@xxxxxxxxxx>
Date: Wed Jul 16 21:03:53 2014 +0000
ktime: Kill non-scalar ktime_t implementation for 2038
there is no longer a 32bit version that's unsigned, and we don't have
to jump through ridiculous hoops to make the calculations correct.
I didn't look whether there's more of this pattern in the kernel.
Cc: John Stultz <john.stultz@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Michel Dänzer <michel.daenzer@xxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_irq.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index f77653562fac..4d06cf41df96 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -863,10 +863,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
/* Subtract time delta from raw timestamp to get final
* vblank_time timestamp for end of vblank.
*/
- if (delta_ns < 0)
- etime = ktime_add_ns(etime, -delta_ns);
- else
- etime = ktime_sub_ns(etime, delta_ns);
+ etime = ktime_sub_ns(etime, delta_ns);
*vblank_time = ktime_to_timeval(etime);
DRM_DEBUG_VBL("crtc %u : v 0x%x p(%d,%d)@ %ld.%ld -> %ld.%ld [e %d us, %d rep]\n",
--
2.8.0.rc3
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