Hi, I found it strange that the macros V4L2_CID_USER_MAX217X_BASE and V4L2_CID_USER_IMX_BASE have equal value even though each of them state that they reserved a range. Those reservations look conflicting to me. The macro V4L2_CID_USER_MAX217X_BASE came first, and V4L2_CID_USER_IMX_BASE was introduced in e130291212df ("media: Add i.MX media core driver") with the conflicting assignment (not a merge error). The authors of that patch mostly make up the recipient list. Is such a conflict fixable at all given that it resides in a uapi header? Helmut