drm_vblank_off() requires callers to hold the event_lock.
Signed-off-by: Imre Deak imre.deak@intel.com --- drivers/gpu/drm/i915/intel_display.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index b453901..56f1119 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3413,6 +3413,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) struct intel_encoder *encoder; int pipe = intel_crtc->pipe; int plane = intel_crtc->plane; + unsigned long flags; u32 reg, temp;
@@ -3423,7 +3424,11 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) encoder->disable(encoder);
intel_crtc_wait_for_pending_flips(crtc); + + spin_lock_irqsave(&dev->event_lock, flags); drm_vblank_off(dev, pipe); + spin_unlock_irqrestore(&dev->event_lock, flags); + intel_crtc_update_cursor(crtc, false);
intel_disable_plane(dev_priv, plane, pipe); @@ -3495,6 +3500,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) int plane = intel_crtc->plane; enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder; bool is_pch_port; + unsigned long flags;
if (!intel_crtc->active) return; @@ -3505,7 +3511,11 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) encoder->disable(encoder);
intel_crtc_wait_for_pending_flips(crtc); + + spin_lock_irqsave(&dev->event_lock, flags); drm_vblank_off(dev, pipe); + spin_unlock_irqrestore(&dev->event_lock, flags); + intel_crtc_update_cursor(crtc, false);
intel_disable_plane(dev_priv, plane, pipe); @@ -3617,6 +3627,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc) struct intel_encoder *encoder; int pipe = intel_crtc->pipe; int plane = intel_crtc->plane; + unsigned long flags;
if (!intel_crtc->active) @@ -3627,7 +3638,11 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
/* Give the overlay scaler a chance to disable if it's on this pipe */ intel_crtc_wait_for_pending_flips(crtc); + + spin_lock_irqsave(&dev->event_lock, flags); drm_vblank_off(dev, pipe); + spin_unlock_irqrestore(&dev->event_lock, flags); + intel_crtc_dpms_overlay(intel_crtc, false); intel_crtc_update_cursor(crtc, false);