[PATCH 2/3] drm/i915: get runtime PM when pinning sprite objects

[Paulo Zanoni <przanoni@gmail.com>]

From: Paulo Zanoni <paulo.r.zanoni@intel.com>

Otherwise we may get WARNs saying we're writing registers while
runtime suspended.

Testcase: igt/pm_rpm/legacy-planes
Testcase: igt/pm_rpm/legacy-planes-dpms
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
 drivers/gpu/drm/i915/intel_sprite.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index d34a569..8c5a8f7 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -821,6 +821,7 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 		   uint32_t src_w, uint32_t src_h)
 {
 	struct drm_device *dev = plane->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	struct intel_plane *intel_plane = to_intel_plane(plane);
 	enum pipe pipe = intel_crtc->pipe;
@@ -1009,7 +1010,9 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 	 * primary plane requires 256KiB alignment with 64 PTE padding,
 	 * the sprite planes only require 128KiB alignment and 32 PTE padding.
 	 */
+	intel_runtime_pm_get(dev_priv);
 	ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
+	intel_runtime_pm_put(dev_priv);
 
 	i915_gem_track_fb(old_obj, obj,
 			  INTEL_FRONTBUFFER_SPRITE(pipe));
-- 
2.0.1