[PATCH 2/8] Drivers: scsi: storvsc: Filter commands based on the storage protocol version

K. Y. Srinivasan kys at microsoft.com
Wed Jul 9 00:46:46 UTC 2014


Going forward it is possible that some of the commands that are not currently
implemented will be implemented on future Windows hosts. Make command filtering
depend on the host version.

Signed-off-by: K. Y. Srinivasan <kys at microsoft.com>
Cc: <stable at vger.kernel.org>
---
 drivers/scsi/storvsc_drv.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 2e4131c..759853c 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1556,9 +1556,14 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
 	struct vmscsi_request *vm_srb;
 	struct stor_mem_pools *memp = scmnd->device->hostdata;
 
-	if (!storvsc_scsi_cmd_ok(scmnd)) {
-		scmnd->scsi_done(scmnd);
-		return 0;
+	if (vmstor_current_major <= VMSTOR_WIN8_MAJOR) {
+		/*
+		 * On legacy hosts filter unimplemented commands.
+		 */
+		if (!storvsc_scsi_cmd_ok(scmnd)) {
+			scmnd->scsi_done(scmnd);
+			return 0;
+		}
 	}
 
 	request_size = sizeof(struct storvsc_cmd_request);
-- 
1.7.4.1



More information about the devel mailing list