Explicitly compare a buffer type only with valid buffer types,
to avoid matching a buffer type outside of the valid buffer type set.
Signed-off-by: Nas Chung <nas.chung@xxxxxxxxxxxxxxx>
Reviewed-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx>
---
v3
- Address Han's feedback
v2
- Improve commit message
- Add V4L2_TYPE_IS_VALID(type) macro
include/uapi/linux/videodev2.h | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index fe6b67e83751..51da63173a98 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -153,10 +153,17 @@ enum v4l2_buf_type {
V4L2_BUF_TYPE_SDR_OUTPUT = 12,
V4L2_BUF_TYPE_META_CAPTURE = 13,
V4L2_BUF_TYPE_META_OUTPUT = 14,
+ /* V4L2_TYPE_IS_VALID and V4L2_TYPE_IS_OUTPUT must
+ * be updated if a new type is added.
+ */
/* Deprecated, do not use */
V4L2_BUF_TYPE_PRIVATE = 0x80,
};
+#define V4L2_TYPE_IS_VALID(type) \
+ ((type) >= V4L2_BUF_TYPE_VIDEO_CAPTURE \
+ && (type) <= V4L2_BUF_TYPE_META_OUTPUT)
+
#define V4L2_TYPE_IS_MULTIPLANAR(type) \
((type) == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE \
|| (type) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
@@ -171,7 +178,8 @@ enum v4l2_buf_type {
|| (type) == V4L2_BUF_TYPE_SDR_OUTPUT \
|| (type) == V4L2_BUF_TYPE_META_OUTPUT)
-#define V4L2_TYPE_IS_CAPTURE(type) (!V4L2_TYPE_IS_OUTPUT(type))
+#define V4L2_TYPE_IS_CAPTURE(type) \
+ (V4L2_TYPE_IS_VALID(type) && !V4L2_TYPE_IS_OUTPUT(type))
enum v4l2_tuner_type {
V4L2_TUNER_RADIO = 1,
--
2.25.1
