From 56f2a8016e0ab54de8daaac3df4712cad0fcef2e Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Wed, 24 Apr 2013 21:19:47 -0400 Subject: [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 Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley --- drivers/scsi/scsi_devinfo.c | 1 + drivers/scsi/scsi_scan.c | 3 +++ 2 files changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index 43fca9170bf2..f969aca0b54e 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -228,6 +228,7 @@ static struct { {"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 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) { -- cgit v1.2.3