[SCSI] Workaround for disks that report bad optimal transfer length
Not all disks fill out the VPD pages correctly. Add a blacklist flag
that allows us ignore the SBC-3 VPD pages for a given device. The
BLIST_SKIP_VPD_PAGES flag triggers our existing skip_vpd_pages
scsi_device parameter to bypass VPD scanning.
Also blacklist the offending Seagate drive model.
Reported-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 43fca91..f969aca 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -228,6 +228,7 @@
{"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
{"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
{"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
+ {"SEAGATE", "ST900MM0006", NULL, BLIST_SKIP_VPD_PAGES},
{"SGI", "RAID3", "*", BLIST_SPARSELUN},
{"SGI", "RAID5", "*", BLIST_SPARSELUN},
{"SGI", "TP9100", "*", BLIST_REPORTLUN2},
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 852915a..307a811 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -926,6 +926,9 @@
sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;
+ if (*bflags & BLIST_SKIP_VPD_PAGES)
+ sdev->skip_vpd_pages = 1;
+
transport_configure_device(&sdev->sdev_gendev);
if (sdev->host->hostt->slave_configure) {