2 files changed, 0 insertions, 48 deletions

diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index 1e4984acb648..9d0fb4b867c4 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -234,31 +234,6 @@ tape_34xx_unsolicited_irq(struct tape_device *device, struct irb *irb)
 	return TAPE_IO_SUCCESS;
 }
 
-/*
- * Read Opposite Error Recovery Function:
- * Used, when Read Forward does not work
- */
-static int
-tape_34xx_erp_read_opposite(struct tape_device *device,
-			    struct tape_request *request)
-{
-	if (request->op == TO_RFO) {
-		/*
-		 * We did read forward, but the data could not be read
-		 * *correctly*. We transform the request to a read backward
-		 * and try again.
-		 */
-		tape_std_read_backward(device, request);
-		return tape_34xx_erp_retry(request);
-	}
-
-	/*
-	 * We tried to read forward and backward, but hat no
-	 * success -> failed.
-	 */
-	return tape_34xx_erp_failed(request, -EIO);
-}
-
 static int
 tape_34xx_erp_bug(struct tape_device *device, struct tape_request *request,
 		  struct irb *irb, int no)
@@ -440,9 +415,6 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request,
 			dev_warn (&device->cdev->dev, "A write error on the "
 				"tape cannot be recovered\n");
 			return tape_34xx_erp_failed(request, -EIO);
-		case 0x26:
-			/* Data Check (read opposite) occurred. */
-			return tape_34xx_erp_read_opposite(device, request);
 		case 0x28:
 			/* ID-Mark at tape start couldn't be written */
 			dev_warn (&device->cdev->dev, "Writing the ID-mark "
diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c
index 66d4a9b7e710..29e40ad6fd19 100644
--- a/drivers/s390/char/tape_std.c
+++ b/drivers/s390/char/tape_std.c
@@ -663,25 +663,6 @@ tape_std_read_block(struct tape_device *device)
 }
 
 /*
- * Read Block backward transformation function.
- */
-void
-tape_std_read_backward(struct tape_device *device, struct tape_request *request)
-{
-	/*
-	 * We have allocated 4 ccws in tape_std_read, so we can now
-	 * transform the request to a read backward, followed by a
-	 * forward space block.
-	 */
-	request->op = TO_RBA;
-	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
-	tape_ccw_cc_idal(request->cpaddr + 1, READ_BACKWARD,
-			 device->char_data.idal_buf);
-	tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL);
-	tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL);
-	DBF_EVENT(6, "xrop ccwg");}
-
-/*
  * Write Block
  */
 struct tape_request *
@@ -741,6 +722,5 @@ EXPORT_SYMBOL(tape_std_mterase);
 EXPORT_SYMBOL(tape_std_mtunload);
 EXPORT_SYMBOL(tape_std_mtcompression);
 EXPORT_SYMBOL(tape_std_read_block);
-EXPORT_SYMBOL(tape_std_read_backward);
 EXPORT_SYMBOL(tape_std_write_block);
 EXPORT_SYMBOL(tape_std_process_eov);