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st: clear ILI if Medium Error

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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>
This commit is contained in:
Kai Makisara 2016-04-18 08:47:18 +03:00 committed by Martin K. Petersen
parent 718924180a
commit 5e4fabb6eb
1 changed files with 6 additions and 3 deletions
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9
drivers/scsi/st.c
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@ -1974,9 +1974,12 @@ static long read_tape(struct scsi_tape *STp, long count,
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 &&