All changes in UAPI headers must be backwards compatible. The above doesn't look like a backwards compatible change to me.
*/
struct utp_upiu_query {
__u8 opcode;
__u8 idn;
__u8 index;
__u8 selector;
- __be16 reserved_osf;
- __be16 length;
- __be32 value;
- __be32 reserved[2];
+ __u8 osf3;
+ __u8 osf4;
+ __be16 osf5;
+ __be32 osf6;
+ __be32 osf7;
};
This API was originally invented to support ufs-bsg.
AFAIK, ufs-utils is the only app that makes use of this API,
and it doesn't dig into struct utp_upiu_query inner fields.