V4L2_FMTDESC_FLAG_ENUM_ALL
u32 index = f->index & ~V4L2_FMTDESC_FLAG_ENUM_ALL;
enum_all_formats = !!(f->index & V4L2_FMTDESC_FLAG_ENUM_ALL);
u32 index = f->index & ~V4L2_FMTDESC_FLAG_ENUM_ALL;
if (f->index & V4L2_FMTDESC_FLAG_ENUM_ALL) {