--- zzzz-none-000/linux-3.10.107/drivers/s390/char/tape_char.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/s390/char/tape_char.c	2021-02-04 17:41:59.000000000 +0000
@@ -402,7 +402,9 @@
 		memset(&get, 0, sizeof(get));
 		get.mt_type = MT_ISUNKNOWN;
 		get.mt_resid = 0 /* device->devstat.rescnt */;
-		get.mt_dsreg = device->tape_state;
+		get.mt_dsreg =
+			((device->char_data.block_size << MT_ST_BLKSIZE_SHIFT)
+			 & MT_ST_BLKSIZE_MASK);
 		/* FIXME: mt_gstat, mt_erreg, mt_fileno */
 		get.mt_gstat = 0;
 		get.mt_erreg = 0;