Commit 4089b71cc820 blacklisted WRITE SAME for all VMware disks.
However, the WRITE SAME commands are supported for passthrough
disks. Change the heuristic so we only blacklist virtual disks.
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Reported-by: Petr Vandrovec <petr@xxxxxxxxxx>
Tested-by: Chris J Arges <chris.j.arges@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v3.18
---
drivers/message/fusion/mptspi.c | 5 -----
drivers/scsi/scsi_devinfo.c | 2 ++
drivers/scsi/scsi_scan.c | 3 +++
include/scsi/scsi_devinfo.h | 1 +
4 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 613231c16194..787933d43d32 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -1419,11 +1419,6 @@ mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto out_mptspi_probe;
}
- /* VMWare emulation doesn't properly implement WRITE_SAME
- */
- if (pdev->subsystem_vendor == 0x15AD)
- sh->no_write_same = 1;
-
spin_lock_irqsave(&ioc->FreeQlock, flags);
/* Attach the SCSI Host to the IOC structure
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 49014a143c6a..8c228e049bb6 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -249,6 +249,8 @@ static struct {
{"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
{"Traxdata", "CDR4120", NULL, BLIST_NOLUN}, /* locks up */
{"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
+ {"VMware", "Virtual disk", "1.0", BLIST_NO_WRITE_SAME }, /* ESX */
+ {"VMware,", "VMware Virtual S", "1.0", BLIST_NO_WRITE_SAME }, /* WS,Fusion */
{"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
{"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
{"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 0cda53adfd35..0dd31752796a 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -963,6 +963,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
if (*bflags & BLIST_NO_DIF)
sdev->no_dif = 1;
+ if (*bflags & BLIST_NO_WRITE_SAME)
+ sdev->no_write_same = 1;
+
sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT;
if (*bflags & BLIST_TRY_VPD_PAGES)
diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index 183eaab7c380..1a24efb4b1d6 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -36,5 +36,6 @@
for sequential scan */
#define BLIST_TRY_VPD_PAGES 0x10000000 /* Attempt to read VPD pages */
#define BLIST_NO_RSOC 0x20000000 /* don't try to issue RSOC */
+#define BLIST_NO_WRITE_SAME 0x40000000 /* don't try to issue WRITE SAME */
#endif
--
1.9.3
--
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