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authorMartin K. Petersen <martin.petersen@oracle.com>2013-04-24 21:19:47 -0400
committerJames Bottomley <JBottomley@Parallels.com>2013-06-24 13:00:10 -0700
commit56f2a8016e0ab54de8daaac3df4712cad0fcef2e (patch)
tree5464d103f595effb8c784d22e8f77a0243a75b41 /drivers/scsi/scsi_scan.c
parentc3a634bf78242177fba9c85deb709e7b63ed0ef1 (diff)
[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>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r--drivers/scsi/scsi_scan.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 852915a08465..307a81137607 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -926,6 +926,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
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) {