drm/i915: Unpin the flip target if we fail to queue the flip

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 96fc467..16930c5 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7658,14 +7658,14 @@ static int intel_gen2_queue_flip(struct drm_device *dev,
 
        ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
        if (ret)
-               goto out;
+               goto err;
 
        /* Offset into the new buffer for cases of shared fbs between CRTCs */
        offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
 
        ret = BEGIN_LP_RING(6);
        if (ret)
-               goto out;
+               goto err_unpin;
 
        /* Can't queue multiple flips, so wait for the previous
         * one to finish before executing the next.
@@ -7682,7 +7682,11 @@ static int intel_gen2_queue_flip(struct drm_device *dev,
        OUT_RING(obj->gtt_offset + offset);
        OUT_RING(0); /* aux display base address, unused */
        ADVANCE_LP_RING();
-out:
+       return 0;
+
+err_unpin:
+       intel_unpin_fb_obj(obj);
+err:
        return ret;
 }
 
@@ -7699,14 +7703,14 @@ static int intel_gen3_queue_flip(struct drm_device *dev,
 
        ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
        if (ret)
-               goto out;
+               goto err;
 
        /* Offset into the new buffer for cases of shared fbs between CRTCs */
        offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
 
        ret = BEGIN_LP_RING(6);
        if (ret)
-               goto out;
+               goto err_unpin;
 
        if (intel_crtc->plane)
                flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
@@ -7721,7 +7725,11 @@ static int intel_gen3_queue_flip(struct drm_device *dev,
        OUT_RING(MI_NOOP);
 
        ADVANCE_LP_RING();
-out:
+       return 0;
+
+err_unpin:
+       intel_unpin_fb_obj(obj);
+err:
        return ret;
 }
 
@@ -7737,11 +7745,11 @@ static int intel_gen4_queue_flip(struct drm_device *dev,
 
        ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
        if (ret)
-               goto out;
+               goto err;
 
        ret = BEGIN_LP_RING(4);
        if (ret)
-               goto out;
+               goto err_unpin;
 
        /* i965+ uses the linear or tiled offsets from the
         * Display Registers (which do not change across a page-flip)
@@ -7760,7 +7768,11 @@ static int intel_gen4_queue_flip(struct drm_device *dev,
        pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
        OUT_RING(pf | pipesrc);
        ADVANCE_LP_RING();
-out:
+       return 0;
+
+err_unpin:
+       intel_unpin_fb_obj(obj);
+err:
        return ret;
 }
 
@@ -7776,11 +7788,11 @@ static int intel_gen6_queue_flip(struct drm_device *dev,
 
        ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
        if (ret)
-               goto out;
+               goto err;
 
        ret = BEGIN_LP_RING(4);
        if (ret)
-               goto out;
+               goto err_unpin;
 
        OUT_RING(MI_DISPLAY_FLIP |
                 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
@@ -7791,7 +7803,11 @@ static int intel_gen6_queue_flip(struct drm_device *dev,
        pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
        OUT_RING(pf | pipesrc);
        ADVANCE_LP_RING();
-out:
+       return 0;
+
+err_unpin:
+       intel_unpin_fb_obj(obj);
+err:
        return ret;
 }
 
@@ -7813,18 +7829,22 @@ static int intel_gen7_queue_flip(struct drm_device *dev,
 
        ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
        if (ret)
-               goto out;
+               goto err;
 
        ret = intel_ring_begin(ring, 4);
        if (ret)
-               goto out;
+               goto err_unpin;
 
        intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
        intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
        intel_ring_emit(ring, (obj->gtt_offset));
        intel_ring_emit(ring, (MI_NOOP));
        intel_ring_advance(ring);
-out:
+       return 0;
+
+err_unpin:
+       intel_unpin_fb_obj(obj);
+err:
        return ret;
 }