gpu: drm: radeon: radeon_test: Replace mdelay() with msleep()

radeon_test_ring_sync() and radeon_test_ring_sync2() are never
called in atomic context.
They call mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_test.c

@@ -348,7 +348,7 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
 	if (r)
 		goto out_cleanup;
 
-	mdelay(1000);
+	msleep(1000);
 
 	if (radeon_fence_signaled(fence1)) {
 		DRM_ERROR("Fence 1 signaled without waiting for semaphore.\n");
@@ -369,7 +369,7 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
 		goto out_cleanup;
 	}
 
-	mdelay(1000);
+	msleep(1000);
 
 	if (radeon_fence_signaled(fence2)) {
 		DRM_ERROR("Fence 2 signaled without waiting for semaphore.\n");
@@ -442,7 +442,7 @@ static void radeon_test_ring_sync2(struct radeon_device *rdev,
 	if (r)
 		goto out_cleanup;
 
-	mdelay(1000);
+	msleep(1000);
 
 	if (radeon_fence_signaled(fenceA)) {
 		DRM_ERROR("Fence A signaled without waiting for semaphore.\n");
@@ -462,7 +462,7 @@ static void radeon_test_ring_sync2(struct radeon_device *rdev,
 	radeon_ring_unlock_commit(rdev, ringC, false);
 
 	for (i = 0; i < 30; ++i) {
-		mdelay(100);
+		msleep(100);
 		sigA = radeon_fence_signaled(fenceA);
 		sigB = radeon_fence_signaled(fenceB);
 		if (sigA || sigB)
@@ -487,7 +487,7 @@ static void radeon_test_ring_sync2(struct radeon_device *rdev,
 	radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
 	radeon_ring_unlock_commit(rdev, ringC, false);
 
-	mdelay(1000);
+	msleep(1000);
 
 	r = radeon_fence_wait(fenceA, false);
 	if (r) {