drm: Disable vblank interrupt immediately when drm_vblank_offdelay<0
Make drm_vblank_put() disable the vblank interrupt immediately when the
refcount drops to zero and drm_vblank_offdelay<0.
v2: Preserve the current drm_vblank_offdelay==0 'never disable' behaviur
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index b2428cb..99145c4 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -993,10 +993,13 @@
BUG_ON(atomic_read(&vblank->refcount) == 0);
/* Last user schedules interrupt disable */
- if (atomic_dec_and_test(&vblank->refcount) &&
- (drm_vblank_offdelay > 0))
- mod_timer(&vblank->disable_timer,
- jiffies + ((drm_vblank_offdelay * HZ)/1000));
+ if (atomic_dec_and_test(&vblank->refcount)) {
+ if (drm_vblank_offdelay < 0)
+ vblank_disable_fn((unsigned long)vblank);
+ else if (drm_vblank_offdelay > 0)
+ mod_timer(&vblank->disable_timer,
+ jiffies + ((drm_vblank_offdelay * HZ)/1000));
+ }
}
EXPORT_SYMBOL(drm_vblank_put);