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authorSubhash Jadavani <subhashj@codeaurora.org>2014-09-25 15:32:19 +0300
committerChristoph Hellwig <hch@lst.de>2014-10-01 13:11:03 +0200
commit45341ca3fcacc8720c425e757a627ef81b65b1ee (patch)
tree2d9d1f3e7a4944c77f534834be0e92e8c91cfc8a /drivers/scsi/scsi_scan.c
parentdb525fce95f0ee39102f06f8599ced3f3f3af128 (diff)
downloadlinux-next-45341ca3fcacc8720c425e757a627ef81b65b1ee.tar.gz
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>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r--drivers/scsi/scsi_scan.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index f84c40188478..dde0c542e0b1 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -815,6 +815,19 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
} 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) {