diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 04f3745..2bbb25e 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2596,7 +2596,7 @@ int r600_dma_ring_test(struct radeon_device *rdev,
 		return -EINVAL;
 	}
 
-	tmp = 0xCAFEDEAD;
+	tmp = cpu_to_le32(0xCAFEDEAD);
 	writel(tmp, ptr);
 
 	r = radeon_ring_lock(rdev, ring, 4);
@@ -2611,7 +2611,7 @@ int r600_dma_ring_test(struct radeon_device *rdev,
 	radeon_ring_unlock_commit(rdev, ring);
 
 	for (i = 0; i < rdev->usec_timeout; i++) {
-		tmp = readl(ptr);
+		tmp = le32_to_cpu(readl(ptr));
 		if (tmp == 0xDEADBEEF)
 			break;
 		DRM_UDELAY(1);
@@ -3225,7 +3225,7 @@ int r600_dma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
 		return -EINVAL;
 	}
 
-	tmp = 0xCAFEDEAD;
+	tmp = cpu_to_le32(0xCAFEDEAD);
 	writel(tmp, ptr);
 
 	r = radeon_ib_get(rdev, ring->idx, &ib, NULL, 256);
@@ -3252,7 +3252,7 @@ int r600_dma_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
 		return r;
 	}
 	for (i = 0; i < rdev->usec_timeout; i++) {
-		tmp = readl(ptr);
+		tmp = le32_to_cpu(readl(ptr));
 		if (tmp == 0xDEADBEEF)
 			break;
 		DRM_UDELAY(1);