Revert "ioctl: add nvme_set_features_host_id2()"

This reverts commit 0782b38.

The result field is undefined for many commands and thus can have random values.
Thus we can't blindly evaluate these for all commands.

Signed-off-by: Daniel Wagner <[email protected]>

Author: dwsuse

src/libnvme.map

@@ -12,7 +12,6 @@ LIBNVME_1.9 {
 		nvme_ctrl_get_cntlid;
 		nvme_set_features_timestamp2;
 		nvme_set_features_host_behavior2;
-		nvme_set_features_host_id2;
 };
 
 LIBNVME_1_8 {

src/nvme/ioctl.c

@@ -717,18 +717,6 @@ int nvme_set_features_sw_progress(int fd, __u8 pbslc, bool save,
 }
 
 int nvme_set_features_host_id(int fd, bool exhid, bool save, __u8 *hostid)
-{
-	__u32 result = 0;
-	int err;
-
-	err = nvme_set_features_host_id2(fd, exhid, save, hostid, &result);
-	if (err && result)
-		err = result;
-	return err;
-}
-
-int nvme_set_features_host_id2(int fd, bool exhid, bool save, __u8 *hostid,
-			       __u32 *result)
 {
 	__u32 len = exhid ? 16 : 8;
 	__u32 value = !!exhid;
@@ -745,7 +733,7 @@ int nvme_set_features_host_id2(int fd, bool exhid, bool save, __u8 *hostid,
 		.data_len = len,
 		.data = hostid,
 		.timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
-		.result = result,
+		.result = NULL,
 	};
 
 	return nvme_set_features(&args);

src/nvme/ioctl.h

@@ -2903,20 +2903,6 @@ int nvme_set_features_sw_progress(int fd, __u8 pbslc, bool save,
  */
 int nvme_set_features_host_id(int fd, bool exhid, bool save, __u8 *hostid);
 
-/**
- * nvme_set_features_host_id2() - Set enable extended host identifiers feature
- * @fd:		File descriptor of nvme device
- * @exhid:	Enable Extended Host Identifier
- * @save:	Save value across power states
- * @hostid:	Host ID to set
- * @result:	The command completion result from CQE dword0
- *
- * Return: 0 if the ioctl was successful, -1 with errno set to EPROTO when
- * a non-zero state is returned in @result, or -1 with errno set otherwise.
- */
-int nvme_set_features_host_id2(int fd, bool exhid, bool save, __u8 *hostid,
-			       __u32 *result);
-
 /**
  * nvme_set_features_resv_mask() - Set reservation notification mask feature
  *