drm/i915: WARN if we receive any gen9 rps interrupts

Paulo noticed that we don't support RPS on GEN9 yet, so WARN for and
ignore any RPS interrupts on that platform.

Signed-off-by: Imre Deak <imre.deak@intel.com>
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 96d150f575d3bccbd2bbab3683d55994df292f9f..729e9a329f76f398145ef9849a93b268d99c6df2 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1690,6 +1690,11 @@ static void i9xx_pipe_crc_irq_handler(struct drm_device *dev, enum pipe pipe)
  * the work queue. */
 static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
 {
+       /* TODO: RPS on GEN9 is not supported yet. */
+       if (WARN_ONCE(INTEL_INFO(dev_priv)->gen == 9,
+                     "GEN9: unexpected RPS IRQ\n"))
+               return;
+
        if (pm_iir & dev_priv->pm_rps_events) {
                spin_lock(&dev_priv->irq_lock);
                dev_priv->rps.pm_iir |= pm_iir & dev_priv->pm_rps_events;