From 46f12990f2681683ebb3f0f8f6862f842f2722ef Mon Sep 17 00:00:00 2001
From: guanglei <guanglei>
Date: Mon, 16 Oct 2006 03:01:05 +0000
Subject: tapset/scsi.stp: check whether rq_disk is empty

tapset/scheduler.stp
revert changes
---
 tapset/scsi.stp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'tapset/scsi.stp')

diff --git a/tapset/scsi.stp b/tapset/scsi.stp
index f1c449fa..23256893 100644
--- a/tapset/scsi.stp
+++ b/tapset/scsi.stp
@@ -19,8 +19,13 @@
 probe scsi.ioentry
 	= module("*").function("scsi_prep_fn@drivers/scsi/scsi_lib.c")
 {
-	disk_major = $req->rq_disk->major
-	disk_minor = $req->rq_disk->first_minor
+	if($req->rq_disk == 0)  {
+		disk_major = -1
+		disk_minor = -1
+	} else {
+		disk_major = $req->rq_disk->major
+		disk_minor = $req->rq_disk->first_minor
+	}
 	device_state = get_devstate_from_req($q)
 	req_addr = $req
 }
-- 
cgit