From: Prarit Bhargava <prarit@redhat.com>
Date: Wed, 19 Dec 2007 13:11:53 -0500
Subject: [scsi] stex: use resid for xfer len information
Message-id: 20071219181153.32671.38452.sendpatchset@prarit.boston.redhat.com
O-Subject: [RHEL5 PATCH]: use resid for xfer len information when issuing MGT_CMD
Bugzilla: 251557

Backport of

http://git.kernel.org/?p=linux/kernel/git/jejb/scsi-misc-2.6.git;a=commit;h=968a5763fb7247feb0e69573a2975a7a0c094267

[SCSI] stex: use resid for xfer len information

The original implementation in stex_ys_commands() is inappropriate.
For xfer len information, we should use resid instead.

Resolves BZ 251557.

Customer requested and tested on older RHEL5 kernel.  Compile tested by me
(no HW in RH to test on).

Acked-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 8df1d72..cf253d0 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -35,11 +35,11 @@
 #include <scsi/scsi_dbg.h>
 
 #define DRV_NAME "stex"
-#define ST_DRIVER_VERSION "3.6.0000.1"
+#define ST_DRIVER_VERSION "3.6.0102.2"
 #define ST_VER_MAJOR 		3
 #define ST_VER_MINOR 		6
-#define ST_OEM 			0
-#define ST_BUILD_VER 		1
+#define ST_OEM 			0102
+#define ST_BUILD_VER 		2
 
 enum {
 	/* MU register offset */
@@ -769,7 +769,7 @@ static void stex_ys_commands(struct st_hba *hba,
 
 	if (ccb->cmd->cmnd[0] == MGT_CMD &&
 		resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
-		ccb->cmd->request_bufflen =
+		ccb->cmd->resid = ccb->cmd->request_bufflen -
 			le32_to_cpu(*(__le32 *)&resp->variable[0]);
 		return;
 	}