storvsc: Allow write_same when host is windows 10
Allow WRITE_SAME for Windows10 and above hosts.
Tested-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: Keith Mange <keith.mange@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 97219a0..cbb1bd1 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1480,7 +1480,8 @@
/*
* If the host is WIN8 or WIN8 R2, claim conformance to SPC-3
- * if the device is a MSFT virtual device.
+ * if the device is a MSFT virtual device. If the host is
+ * WIN10 or newer, allow write_same.
*/
if (!strncmp(sdevice->vendor, "Msft", 4)) {
switch (vmstor_proto_version) {
@@ -1489,6 +1490,9 @@
sdevice->scsi_level = SCSI_SPC_3;
break;
}
+
+ if (vmstor_proto_version >= VMSTOR_PROTO_VERSION_WIN10)
+ sdevice->no_write_same = 0;
}
return 0;