commit 5e4fabb6eb058f6d473e22b6db3ef299acf00f1c
author Kai Makisara <Kai.Makisara@kolumbus.fi> Mon Apr 18 08:47:18 2016 +0300
committer Martin K. Petersen <martin.petersen@oracle.com> Mon Apr 25 22:08:16 2016 -0400
tree ceedd2041da007aba8b1aac46ad1072e8119511c
parent 718924180a6a79afa558bd978c8a3436c39691ff

st: clear ILI if Medium Error

Some drives set the ILI flag together with MEDIUM ERROR sense code.
Clear the ILI flag in this case so that the medium error will be
handled.  The problem was reported by Maurizio Lombardi.

Signed-off-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/st.c

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index dbf1882c..7af5226 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -1974,9 +1974,12 @@
 					transfer = (int)cmdstatp->uremainder64;
 				else
 					transfer = 0;
-				if (STp->block_size == 0 &&
-				    cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR)
-					transfer = bytes;
+				if (cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR) {
+					if (STp->block_size == 0)
+						transfer = bytes;
+					/* Some drives set ILI with MEDIUM ERROR */
+					cmdstatp->flags &= ~SENSE_ILI;
+				}
 
 				if (cmdstatp->flags & SENSE_ILI) {	/* ILI */
 					if (STp->block_size == 0 &&