diff options
| -rw-r--r-- | sys/cam/scsi/scsi_sa.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/cam/scsi/scsi_sa.c b/sys/cam/scsi/scsi_sa.c index 52d9b4e..5826caa 100644 --- a/sys/cam/scsi/scsi_sa.c +++ b/sys/cam/scsi/scsi_sa.c @@ -2396,9 +2396,13 @@ saregister(struct cam_periph *periph, void *arg) * Long format data for READ POSITION was introduced in SSC, which * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive * reports that it is SCSI-2 or older, it is unlikely to support - * long position data. + * long position data, but it might. Some drives from that era + * claim to be SCSI-2, but do support long position information. + * So, instead of immediately disabling long position information + * for SCSI-2 devices, we'll try one pass through sagetpos(), and + * then disable long position information if we get an error. */ - if (cgd->inq_data.version <= SCSI_REV_2) + if (cgd->inq_data.version <= SCSI_REV_CCS) softc->quirks |= SA_QUIRK_NO_LONG_POS; if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { |
