[SCSI] add residual argument to scsi_execute and scsi_execute_req

scsi_execute() and scsi_execute_req() discard the residual length
information. Some callers need it. This adds residual argument
(optional) to scsi_execute and scsi_execute_req.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
index 1bcf3c3..7f0df29 100644
--- a/drivers/scsi/ses.c
+++ b/drivers/scsi/ses.c
@@ -77,7 +77,7 @@
 	};
 
 	return scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf, bufflen,
-				NULL, SES_TIMEOUT, SES_RETRIES);
+				NULL, SES_TIMEOUT, SES_RETRIES, NULL);
 }
 
 static int ses_send_diag(struct scsi_device *sdev, int page_code,
@@ -95,7 +95,7 @@
 	};
 
 	result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, buf, bufflen,
-				  NULL, SES_TIMEOUT, SES_RETRIES);
+				  NULL, SES_TIMEOUT, SES_RETRIES, NULL);
 	if (result)
 		sdev_printk(KERN_ERR, sdev, "SEND DIAGNOSTIC result: %8x\n",
 			    result);
@@ -369,7 +369,8 @@
 		return;
 
 	if (scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf,
-			     VPD_INQUIRY_SIZE, NULL, SES_TIMEOUT, SES_RETRIES))
+			     VPD_INQUIRY_SIZE, NULL, SES_TIMEOUT, SES_RETRIES,
+			     NULL))
 		goto free;
 
 	vpd_len = (buf[2] << 8) + buf[3];
@@ -380,7 +381,7 @@
 	cmd[3] = vpd_len >> 8;
 	cmd[4] = vpd_len & 0xff;
 	if (scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf,
-			     vpd_len, NULL, SES_TIMEOUT, SES_RETRIES))
+			     vpd_len, NULL, SES_TIMEOUT, SES_RETRIES, NULL))
 		goto free;
 
 	desc = buf + 4;