diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index d4f10c0d813cf49b3309f1f13d832b4e4b6028a0..a3bce11ed4b4b9888cf10beafabf41f5bde6768c 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -668,16 +668,17 @@ stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 		return 0;
 	case PASSTHRU_CMD:
 		if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
-			struct st_drvver ver;
+			const struct st_drvver ver = {
+				.major = ST_VER_MAJOR,
+				.minor = ST_VER_MINOR,
+				.oem = ST_OEM,
+				.build = ST_BUILD_VER,
+				.signature[0] = PASSTHRU_SIGNATURE,
+				.console_id = host->max_id - 1,
+				.host_no = hba->host->host_no,
+			};
 			size_t cp_len = sizeof(ver);
 
-			ver.major = ST_VER_MAJOR;
-			ver.minor = ST_VER_MINOR;
-			ver.oem = ST_OEM;
-			ver.build = ST_BUILD_VER;
-			ver.signature[0] = PASSTHRU_SIGNATURE;
-			ver.console_id = host->max_id - 1;
-			ver.host_no = hba->host->host_no;
 			cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
 			cmd->result = sizeof(ver) == cp_len ?
 				DID_OK << 16 | COMMAND_COMPLETE << 8 :
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 96643e48bd5264b0c38702827bc93a35b462ada9..d4dbbd3e58dd5e9afc3eae3d21b084e4089fc334 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -211,7 +211,7 @@ static inline unsigned int scsi_get_resid(struct scsi_cmnd *cmd)
 	for_each_sg(scsi_sglist(cmd), sg, nseg, __i)
 
 static inline int scsi_sg_copy_from_buffer(struct scsi_cmnd *cmd,
-					   void *buf, int buflen)
+					   const void *buf, int buflen)
 {
 	return sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd),
 				   buf, buflen);