diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 2b8276e37..a13d54b32 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1654,8 +1654,11 @@ int __gk20a_do_idle(struct platform_device *pdev)
 		ref_cnt = atomic_read(&pdev->dev.power.usage_count);
 	} while (ref_cnt != 1 && time_before(jiffies, timeout));
 
-	if (ref_cnt != 1)
+	if (ref_cnt != 1) {
+		gk20a_err(&pdev->dev, "failed to idle - refcount %d != 1\n",
+			ref_cnt);
 		goto fail;
+	}
 
 	/*
 	 * if GPU is now idle, we will have only one ref count
@@ -1678,10 +1681,12 @@ int __gk20a_do_idle(struct platform_device *pdev)
 			is_railgated = platform->is_railgated(pdev);
 		} while (!is_railgated && time_before(jiffies, timeout));
 
-		if (is_railgated)
+		if (is_railgated) {
 			return 0;
-		else
+		} else {
+			gk20a_err(&pdev->dev, "failed to idle in timeout\n");
 			goto fail_timeout;
+		}
 	} else {
 		if (!platform->reset_assert || !platform->reset_deassert)
 			goto fail_timeout;