[Intel-gfx] [PATCH 13/19] drm/i915: factor out reset_vblank_counter

[Imre Deak]

We need to do the same for other platforms in upcoming patches.

Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9cb7ed6..e81e7de 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5249,11 +5249,19 @@ static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv)
 	}
 }
 
+static void reset_vblank_counter(struct drm_device *dev, enum pipe p)
+{
+	unsigned long irqflags;
+
+	spin_lock_irqsave(&dev->vbl_lock, irqflags);
+	dev->vblank[p].last = 0;
+	spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+}
+
 static void hsw_power_well_post_disable(struct drm_i915_private *dev_priv)
 {
 	struct drm_device *dev = dev_priv->dev;
 	enum pipe p;
-	unsigned long irqflags;
 
 	/*
 	 * After this, the registers on the pipes that are part of the power
@@ -5262,11 +5270,9 @@ static void hsw_power_well_post_disable(struct drm_i915_private *dev_priv)
 	 *
 	 * FIXME: Should we do this in general in drm_vblank_post_modeset?
 	 */
-	spin_lock_irqsave(&dev->vbl_lock, irqflags);
 	for_each_pipe(p)
 		if (p != PIPE_A)
-			dev->vblank[p].last = 0;
-	spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+			reset_vblank_counter(dev, p);
 }
 
 static void hsw_set_power_well(struct drm_i915_private *dev_priv,
-- 
1.8.4