Revert "ioctl: add nvme_set_features_timestamp2()"

This reverts commit 99d5e26.

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

@@ -10,7 +10,6 @@ LIBNVME_1.9 {
 		nvme_submit_passthru64;
 		nvme_update_key;
 		nvme_ctrl_get_cntlid;
-		nvme_set_features_timestamp2;
 };
 
 LIBNVME_1_8 {

src/nvme/ioctl.c

@@ -530,18 +530,6 @@ int nvme_set_features_auto_pst(int fd, bool apste, bool save,
 }
 
 int nvme_set_features_timestamp(int fd, bool save, __u64 timestamp)
-{
-	__u32 result = 0;
-	int err;
-
-	err = nvme_set_features_timestamp2(fd, save, timestamp, &result);
-	if (err && result)
-		err = result;
-	return err;
-}
-
-int nvme_set_features_timestamp2(int fd, bool save, __u64 timestamp,
-		__u32 *result)
 {
 	__le64 t = cpu_to_le64(timestamp);
 	struct nvme_timestamp ts = {};
@@ -558,7 +546,7 @@ int nvme_set_features_timestamp2(int fd, bool save, __u64 timestamp,
 		.data_len = sizeof(ts),
 		.data = &ts,
 		.timeout = NVME_DEFAULT_IOCTL_TIMEOUT,
-		.result = result,
+		.result = NULL,
 	};
 
 	memcpy(ts.timestamp, &t, sizeof(ts.timestamp));

src/nvme/ioctl.h

@@ -2730,19 +2730,6 @@ int nvme_set_features_auto_pst(int fd, bool apste, bool save,
  */
 int nvme_set_features_timestamp(int fd, bool save, __u64 timestamp);
 
-/**
- * nvme_set_features_timestamp2() - Set timestamp feature
- * @fd:		File descriptor of nvme device
- * @save:	Save value across power states
- * @timestamp:	The current timestamp value to assign to this feature
- * @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_timestamp2(int fd, bool save, __u64 timestamp,
-		__u32 *result);
-
 /**
  * nvme_set_features_hctm() - Set thermal management feature
  * @fd:		File descriptor of nvme device