drm/i915: factor out intel_set_cpu_fifo_underrun_reporting_nolock

Needed by the next patch, wanting to set the underrun reporting as part
of a bigger dev_priv->irq_lock'ed sequence.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Use more customary __ prefix instead of _nolock postfix.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index d6f827a..f43dae9 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -387,17 +387,14 @@ static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
  *
  * Returns the previous state of underrun reporting.
  */
-bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
-                                          enum pipe pipe, bool enable)
+bool __intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
+                                            enum pipe pipe, bool enable)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-       unsigned long flags;
        bool ret;
 
-       spin_lock_irqsave(&dev_priv->irq_lock, flags);
-
        ret = !intel_crtc->cpu_fifo_underrun_disabled;
 
        if (enable == ret)
@@ -415,7 +412,20 @@ bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
                broadwell_set_fifo_underrun_reporting(dev, pipe, enable);
 
 done:
+       return ret;
+}
+
+bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
+                                          enum pipe pipe, bool enable)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       unsigned long flags;
+       bool ret;
+
+       spin_lock_irqsave(&dev_priv->irq_lock, flags);
+       ret = __intel_set_cpu_fifo_underrun_reporting(dev, pipe, enable);
        spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
+
        return ret;
 }