Currently the code starts new tape session when any Unit Attention
(UA) is seen when opening the device. This leads to incorrectly
clearing pos_unknown when the UA is for reset. Set new session only
when the UA is for a new tape.
---
drivers/scsi/st.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index c9038284bc89..e8ef27d7ef61 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -991,7 +991,10 @@ static int test_ready(struct scsi_tape *STp, int do_wait)
scode = cmdstatp->sense_hdr.sense_key;
if (scode == UNIT_ATTENTION) { /* New media? */
- new_session = 1;
+ if (cmdstatp->sense_hdr.asc == 0x28) { /* New media */
+ new_session = 1;
+ DEBC_printk(STp, "New tape session.");
+ }
if (attentions < MAX_ATTENTIONS) {
attentions++;
continue;
--
2.43.0
