From: Ben Collins <bcollins@ubuntu.com>
Date: Mon, 12 Jun 2006 22:12:59 +0000 (-0400)
Subject: sbp2: remove manipulation of inquiry response
X-Git-Tag: v2.6.18-rc1~1094^2~18
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fe42b05a9929e159355bde6025ae46db2ac88658;p=linux-2.6

sbp2: remove manipulation of inquiry response

This code became ineffective a few Linux releases ago and is not
required anyway.

Note from Christoph Hellwig: scsi_cmnd.request_buffer is always a
scatterlist these days.  Checking random bites into it and then
mangling the data in sbp2_check_sbp2_response will cause really bad
memory corruption when you're not lucky enough to have the check not
trigger by luck.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
---

diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index c30e03a0e6..11c353a465 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -2111,33 +2111,6 @@ static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, unchar *sense
 	return sbp2_status[8] & 0x3f;	/* return scsi status */
 }
 
-/*
- * This function is called after a command is completed, in order to do any necessary SBP-2
- * response data translations for the SCSI stack
- */
-static void sbp2_check_sbp2_response(struct scsi_id_instance_data *scsi_id,
-				     struct scsi_cmnd *SCpnt)
-{
-	u8 *scsi_buf = SCpnt->request_buffer;
-
-	SBP2_DEBUG_ENTER();
-
-	if (SCpnt->cmnd[0] == INQUIRY && (SCpnt->cmnd[1] & 3) == 0) {
-		/*
-		 * Make sure data length is ok. Minimum length is 36 bytes
-		 */
-		if (scsi_buf[4] == 0) {
-			scsi_buf[4] = 36 - 5;
-		}
-
-		/*
-		 * Fix ansi revision and response data format
-		 */
-		scsi_buf[2] |= 2;
-		scsi_buf[3] = (scsi_buf[3] & 0xf0) | 2;
-	}
-}
-
 /*
  * This function deals with status writes from the SBP-2 device
  */
@@ -2476,13 +2449,6 @@ static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id,
 		SCpnt->result = DID_ERROR << 16;
 	}
 
-	/*
-	 * Take care of any sbp2 response data mucking here (RBC stuff, etc.)
-	 */
-	if (SCpnt->result == DID_OK << 16) {
-		sbp2_check_sbp2_response(scsi_id, SCpnt);
-	}
-
 	/*
 	 * If a bus reset is in progress and there was an error, complete
 	 * the command as busy so that it will get retried.
diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h
index f4ccc9d0fb..2f53b16afc 100644
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -395,9 +395,8 @@ static int sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id,
 static int sbp2_send_command(struct scsi_id_instance_data *scsi_id,
 			     struct scsi_cmnd *SCpnt,
 			     void (*done)(struct scsi_cmnd *));
-static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, unchar *sense_data);
-static void sbp2_check_sbp2_response(struct scsi_id_instance_data *scsi_id,
-				     struct scsi_cmnd *SCpnt);
+static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status,
+					      unchar *sense_data);
 static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id,
 				      struct unit_directory *ud);
 static int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id);