[PATCH v2] v4l2-compliance: fail if format MEDIA_BUS_FMT_METADATA_FIXED has width/height not equal 0

[Dafna Hirschfeld]

The media bus format code MEDIA_BUS_FMT_METADATA_FIXED
is used for metadata formats that are not configurable
from userspace. This format should have width and height
set to 0.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld at collabora.com>
Reviewed-by: Helen Koike <helen.koike at collabora.com>
---
The patch should be applied together with the kernel patch
https://patchwork.kernel.org/project/linux-media/patch/20201020154522.654-1-dafna.hirschfeld@collabora.com/

changes from v1:
add a test that check if the mbus format is MEDIA_BUS_FMT_METADATA_FIXED
and the width or height are not 0

 utils/v4l2-compliance/v4l2-test-subdevs.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/utils/v4l2-compliance/v4l2-test-subdevs.cpp b/utils/v4l2-compliance/v4l2-test-subdevs.cpp
index ec3ef169..4dedc7a9 100644
--- a/utils/v4l2-compliance/v4l2-test-subdevs.cpp
+++ b/utils/v4l2-compliance/v4l2-test-subdevs.cpp
@@ -300,8 +300,12 @@ int testSubDevFrameInterval(struct node *node, unsigned pad)
 static int checkMBusFrameFmt(struct node *node, struct v4l2_mbus_framefmt &fmt)
 {
 	fail_on_test(check_0(fmt.reserved, sizeof(fmt.reserved)));
-	fail_on_test(fmt.width == 0 || fmt.width > 65536);
-	fail_on_test(fmt.height == 0 || fmt.height > 65536);
+	if (fmt.code != MEDIA_BUS_FMT_METADATA_FIXED) {
+		fail_on_test(fmt.width == 0 || fmt.width > 65536);
+		fail_on_test(fmt.height == 0 || fmt.height > 65536);
+	} else {
+		fail_on_test(fmt.width != 0 || fmt.height != 0);
+	}
 	fail_on_test(fmt.code == 0 || fmt.code == ~0U);
 	fail_on_test(fmt.field == ~0U);
 	if (!node->is_passthrough_subdev) {
-- 
2.17.1