drm/i915: factor out reset_vblank_counter
We need to do the same for other platforms in upcoming patches.
v2:
- s/p/pipe (Ville)
- Call the new helper with the vbl_lock already held. The part it
protects is short, so releasing it between pipes only makes proving
correctness more difficult.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Resolve conflict with Damien's s/p/pipe/ change.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index a4c0ff1..1959148 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5310,6 +5310,13 @@
}
}
+static void reset_vblank_counter(struct drm_device *dev, enum pipe pipe)
+{
+ assert_spin_locked(&dev->vbl_lock);
+
+ dev->vblank[pipe].last = 0;
+}
+
static void hsw_power_well_post_disable(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
@@ -5326,7 +5333,7 @@
spin_lock_irqsave(&dev->vbl_lock, irqflags);
for_each_pipe(pipe)
if (pipe != PIPE_A)
- dev->vblank[pipe].last = 0;
+ reset_vblank_counter(dev, pipe);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
}