From 45341ca3fcacc8720c425e757a627ef81b65b1ee Mon Sep 17 00:00:00 2001 From: Subhash Jadavani Date: Thu, 25 Sep 2014 15:32:19 +0300 Subject: 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 Signed-off-by: Sujit Reddy Thumma Signed-off-by: Dolev Raviv Signed-off-by: Christoph Hellwig --- drivers/scsi/scsi_scan.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/scsi') 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) { -- cgit v1.2.3