diff --git a/[refs] b/[refs]
index 3eb576efdf1d..54596fa05dbd 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 69c9700b544e496dc3ccf472a4f3a76dcf4abaf7
+refs/heads/master: 139295b671ff4ccd904f2fa58e9dbc0fe99cc7fe
diff --git a/trunk/drivers/gpu/drm/nouveau/nouveau_irq.c b/trunk/drivers/gpu/drm/nouveau/nouveau_irq.c
index 3b9bad66162a..baa9b3e0b66b 100644
--- a/trunk/drivers/gpu/drm/nouveau/nouveau_irq.c
+++ b/trunk/drivers/gpu/drm/nouveau/nouveau_irq.c
@@ -211,6 +211,20 @@ nouveau_fifo_irq_handler(struct drm_device *dev)
 								get + 4);
 		}
 
+		if (status & NV_PFIFO_INTR_SEMAPHORE) {
+			uint32_t sem;
+
+			status &= ~NV_PFIFO_INTR_SEMAPHORE;
+			nv_wr32(dev, NV03_PFIFO_INTR_0,
+				NV_PFIFO_INTR_SEMAPHORE);
+
+			sem = nv_rd32(dev, NV10_PFIFO_CACHE1_SEMAPHORE);
+			nv_wr32(dev, NV10_PFIFO_CACHE1_SEMAPHORE, sem | 0x1);
+
+			nv_wr32(dev, NV03_PFIFO_CACHE1_GET, get + 4);
+			nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
+		}
+
 		if (status) {
 			NV_INFO(dev, "PFIFO_INTR 0x%08x - Ch %d\n",
 				status, chid);