[v4l-utils] [PATCH 6/8] v4l2-compliance: Support the changed routing API

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Set len_routes of struct v4l2_subdev_routing. ENOSPC error code is no
longer used, i.e. having room for fewer routes than exist in the
configuration is not considered an error anymore.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 utils/v4l2-compliance/v4l2-compliance.cpp   | 12 +++++++-----
 utils/v4l2-compliance/v4l2-test-subdevs.cpp | 19 +++++++++++--------
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/utils/v4l2-compliance/v4l2-compliance.cpp b/utils/v4l2-compliance/v4l2-compliance.cpp
index 2cf979096bd0..72fe0bd778ab 100644
--- a/utils/v4l2-compliance/v4l2-compliance.cpp
+++ b/utils/v4l2-compliance/v4l2-compliance.cpp
@@ -1272,15 +1272,17 @@ void testNode(struct node &node, struct node &node_m2m_cap, struct node &expbuf_
 
 			for (unsigned which = V4L2_SUBDEV_FORMAT_TRY;
 				which <= V4L2_SUBDEV_FORMAT_ACTIVE; which++) {
+				struct v4l2_subdev_routing &routing = sd_routing[which];
 
-				sd_routing[which].which = which;
-				sd_routing[which].routes = (__u64)sd_routes[which];
-				sd_routing[which].num_routes = NUM_ROUTES_MAX;
+				routing.which = which;
+				routing.routes = (__u64)sd_routes[which];
+				routing.len_routes = NUM_ROUTES_MAX;
+				routing.num_routes = 0;
 
-				ret = doioctl(&node, VIDIOC_SUBDEV_G_ROUTING, &sd_routing[which]);
+				ret = doioctl(&node, VIDIOC_SUBDEV_G_ROUTING, &routing);
 				if (ret) {
 					fail("VIDIOC_SUBDEV_G_ROUTING: failed to get routing\n");
-					sd_routing[which].num_routes = 0;
+					routing.num_routes = 0;
 				}
 			}
 		}
diff --git a/utils/v4l2-compliance/v4l2-test-subdevs.cpp b/utils/v4l2-compliance/v4l2-test-subdevs.cpp
index ebca1b94f5c0..714857021fc6 100644
--- a/utils/v4l2-compliance/v4l2-test-subdevs.cpp
+++ b/utils/v4l2-compliance/v4l2-test-subdevs.cpp
@@ -587,17 +587,15 @@ int testSubDevRouting(struct node *node, unsigned which)
 
 	routing.which = which;
 	routing.routes = (__u64)&routes;
+	routing.len_routes = 0;
 	routing.num_routes = 0;
 	memset(routing.reserved, 0xff, sizeof(routing.reserved));
 
-	/*
-	 * First test that G_ROUTING either returns success, or ENOSPC and
-	 * updates num_routes.
-	 */
+	/* First test that G_ROUTING returns success even when len_routes is 0. */
 
 	ret = doioctl(node, VIDIOC_SUBDEV_G_ROUTING, &routing);
-	fail_on_test(ret && ret != ENOSPC);
-	fail_on_test(ret == ENOSPC && routing.num_routes == 0);
+	fail_on_test(ret);
+	fail_on_test(routing.num_routes > NUM_ROUTES_MAX);
 	fail_on_test(check_0(routing.reserved, sizeof(routing.reserved)));
 
 	if (!routing.num_routes)
@@ -609,7 +607,8 @@ int testSubDevRouting(struct node *node, unsigned which)
 	 */
 
 	uint32_t num_routes = routing.num_routes;
-	routing.num_routes = num_routes + 1;
+	routing.len_routes = NUM_ROUTES_MAX;
+	routing.num_routes = 0;
 	fail_on_test(doioctl(node, VIDIOC_SUBDEV_G_ROUTING, &routing));
 	fail_on_test(routing.num_routes != num_routes);
 
@@ -633,10 +632,14 @@ int testSubDevRouting(struct node *node, unsigned which)
 		}
 	}
 
-	/* Set the same routes back, which should always succeed. */
+	/*
+	 * Set the same routes back, which should always succeed and report the
+	 * same number of routes.
+	 */
 
 	memset(routing.reserved, 0xff, sizeof(routing.reserved));
 	fail_on_test(doioctl(node, VIDIOC_SUBDEV_S_ROUTING, &routing));
+	fail_on_test(routing.num_routes != num_routes);
 	fail_on_test(check_0(routing.reserved, sizeof(routing.reserved)));
 
 	/* Test setting invalid pads */
-- 
Regards,

Laurent Pinchart