--- hdparm.c
+++ hdparm.c
@@ -292,11 +292,10 @@
 void flush_buffer_cache (int fd)
 {
 	fsync (fd);				/* flush buffers */
-	if (ioctl(fd, BLKFLSBUF, NULL))		/* do it again, big time */
-		perror("BLKFLSBUF failed");
+	ioctl(fd, BLKFLSBUF, NULL);		/* do it again, big time */
 #ifdef HDIO_DRIVE_CMD
-	if (ioctl(fd, HDIO_DRIVE_CMD, NULL) && errno != EINVAL)	/* await completion */
-		perror("HDIO_DRIVE_CMD(null) (wait for flush complete) failed");
+	if (errno != EINVAL && errno != EOPNOTSUPP)
+		ioctl(fd, HDIO_DRIVE_CMD, NULL);/* await completion */
 #endif
 }