scsi: fix the type for well known LUs
Some devices may respond with wrong type for well-known logical units.
This patch forces well-known type for devices which doesn't report it
correct.
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index f84c401..dde0c54 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -815,6 +815,19 @@
} else {
sdev->type = (inq_result[0] & 0x1f);
sdev->removable = (inq_result[1] & 0x80) >> 7;
+
+ /*
+ * some devices may respond with wrong type for
+ * well-known logical units. Force well-known type
+ * to enumerate them correctly.
+ */
+ if (scsi_is_wlun(sdev->lun) && sdev->type != TYPE_WLUN) {
+ sdev_printk(KERN_WARNING, sdev,
+ "%s: correcting incorrect peripheral device type 0x%x for W-LUN 0x%16xhN\n",
+ __func__, sdev->type, (unsigned int)sdev->lun);
+ sdev->type = TYPE_WLUN;
+ }
+
}
if (sdev->type == TYPE_RBC || sdev->type == TYPE_ROM) {