We need to export the 'TGPS' setting of the
inquiry data to properly support ALUA.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/scsi/scsi_scan.c | 1 +
drivers/scsi/scsi_sysfs.c | 2 ++
include/scsi/scsi_device.h | 3 ++-
3 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index a14d245..d1619ed 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -836,6 +836,7 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
sdev->inq_periph_qual = (inq_result[0] >> 5) & 7;
sdev->lockable = sdev->removable;
sdev->soft_reset = (inq_result[7] & 1) && ((inq_result[3] & 7) == 2);
+ sdev->tpgs = (inq_result[5] >> 4) & 3;
if (sdev->scsi_level >= SCSI_3 ||
(sdev->inquiry_len > 56 && inq_result[56] & 0x04))
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index fa4711d..7513ce5 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -560,6 +560,7 @@ sdev_rd_attr (scsi_level, "%d\n");
sdev_rd_attr (vendor, "%.8s\n");
sdev_rd_attr (model, "%.16s\n");
sdev_rd_attr (rev, "%.4s\n");
+sdev_rd_attr (tpgs, "%d\n");
/*
* TODO: can we make these symlinks to the block layer ones?
@@ -745,6 +746,7 @@ static struct attribute *scsi_sdev_attrs[] = {
&dev_attr_vendor.attr,
&dev_attr_model.attr,
&dev_attr_rev.attr,
+ &dev_attr_tpgs.attr,
&dev_attr_rescan.attr,
&dev_attr_delete.attr,
&dev_attr_state.attr,
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 3f566af..22aaf72 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -96,7 +96,8 @@ struct scsi_device {
void *hostdata; /* available to low-level driver */
char type;
char scsi_level;
- char inq_periph_qual; /* PQ from INQUIRY data */
+ char inq_periph_qual; /* PQ from INQUIRY data */
+ char tpgs; /* Target port group support */
unsigned char inquiry_len; /* valid bytes in 'inquiry' */
unsigned char * inquiry; /* INQUIRY response data */
const char * vendor; /* [back_compat] point into 'inquiry' ... */
--
1.5.3.2
--
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