drm/i915: Use drm official vblank_no_hw_counter callback.

No functional change. Instead of defining a new empty function
let's use what is available on drm.

It gets cleaner, and easy to read, and understand.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 006a855..591f452 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -656,12 +656,6 @@ static void i915_enable_asle_pipestat(struct drm_i915_private *dev_priv)
  *   of horizontal active on the first line of vertical active
  */
 
-static u32 i8xx_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
-{
-       /* Gen2 doesn't have a hardware frame counter */
-       return 0;
-}
-
 /* Called from drm generic code, passed a 'crtc', which
  * we use as a pipe index
  */
@@ -4538,8 +4532,9 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
                          i915_hangcheck_elapsed);
 
        if (IS_GEN2(dev_priv)) {
+               /* Gen2 doesn't have a hardware frame counter */
                dev->max_vblank_count = 0;
-               dev->driver->get_vblank_counter = i8xx_get_vblank_counter;
+               dev->driver->get_vblank_counter = drm_vblank_no_hw_counter;
        } else if (IS_G4X(dev_priv) || INTEL_INFO(dev_priv)->gen >= 5) {
                dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
                dev->driver->get_vblank_counter = g4x_get_vblank_counter;