From 00b094c7fa55cca08477cffe069ad8809683c0ea Mon Sep 17 00:00:00 2001
From: Vladislav Bolkhovitin <vst@vlnb.net>
Date: Wed, 25 Mar 2009 19:42:03 +0000
Subject: [PATCH] Patch from Ruben Laban <r.laban@ism.nl>:

While writing DKMS support for the SCST and iSCST-SCST kernel modules, I ran
into a (common) problem with regard to out-of-tree build detection. A common
method to detect out-of-tree building is by using the KERNELRELEASE variable.
The usage of this variable poses a problem when using DKMS. DKMS itself uses
the KERNELRELEASE variable to specify the kernel for which the driver to
build. A suggested alternative would to use the PATCHLEVEL variable as part
of the detection mechanism instead. I attached a patch reflecting this
suggested change.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@720 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 mpt/Makefile                     | 2 +-
 qla2x00t/Makefile                | 2 +-
 qla2x00t/qla2x00-target/Makefile | 2 +-
 scst/src/Makefile                | 2 +-
 scst/src/dev_handlers/Makefile   | 2 +-
 scst_local/Makefile              | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/mpt/Makefile b/mpt/Makefile
index e9a36e576..f2cbd0b97 100644
--- a/mpt/Makefile
+++ b/mpt/Makefile
@@ -45,7 +45,7 @@ endif
 LSI_INC_DIR := $(KDIR)/drivers/message/fusion
 EXTRA_CFLAGS += -I$(LSI_INC_DIR)
 
-ifneq ($(KERNELRELEASE),)
+ifneq ($(PATCHLEVEL),)
 obj-m += mpt_scst.o
 else
 
diff --git a/qla2x00t/Makefile b/qla2x00t/Makefile
index a8b968f0a..9d13c6a61 100644
--- a/qla2x00t/Makefile
+++ b/qla2x00t/Makefile
@@ -1,4 +1,4 @@
-ifneq ($(KERNELRELEASE),)
+ifneq ($(PATCHLEVEL),)
 
 qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
 		qla_dbg.o qla_sup.o qla_attr.o qla_mid.o qla_dfs.o
diff --git a/qla2x00t/qla2x00-target/Makefile b/qla2x00t/qla2x00-target/Makefile
index 5e2995469..06c6bde8b 100644
--- a/qla2x00t/qla2x00-target/Makefile
+++ b/qla2x00t/qla2x00-target/Makefile
@@ -54,7 +54,7 @@ endif
 QLA2XXX_INC_DIR := $(KDIR)/drivers/scsi/qla2xxx
 EXTRA_CFLAGS += -I$(QLA2XXX_INC_DIR)
 
-ifneq ($(KERNELRELEASE),)
+ifneq ($(PATCHLEVEL),)
 obj-m := qla2x00tgt.o
 qla2x00tgt-objs := qla2x00t.o
 
diff --git a/scst/src/Makefile b/scst/src/Makefile
index 87d843c9c..5ed35824f 100644
--- a/scst/src/Makefile
+++ b/scst/src/Makefile
@@ -29,7 +29,7 @@
 
 DEV_HANDLERS_DIR = dev_handlers
 
-ifneq ($(KERNELRELEASE),)
+ifneq ($(PATCHLEVEL),)
 SCST_INC_DIR := $(SUBDIRS)/../include
 
 obj-m := scst.o
diff --git a/scst/src/dev_handlers/Makefile b/scst/src/dev_handlers/Makefile
index af9f6db1c..2447a5879 100644
--- a/scst/src/dev_handlers/Makefile
+++ b/scst/src/dev_handlers/Makefile
@@ -27,7 +27,7 @@
 #    - install and uninstall must be made as root
 #
 
-ifneq ($(KERNELRELEASE),)
+ifneq ($(PATCHLEVEL),)
 SCST_INC_DIR := $(SUBDIRS)/../include
 
 obj-m := scst_cdrom.o scst_changer.o scst_disk.o scst_modisk.o scst_tape.o \
diff --git a/scst_local/Makefile b/scst_local/Makefile
index 6966d16ec..727a86740 100644
--- a/scst_local/Makefile
+++ b/scst_local/Makefile
@@ -25,7 +25,7 @@ else
   KDIR := /lib/modules/$(KVER)/build
 endif
 
-ifneq ($(KERNELRELEASE),)
+ifneq ($(PATCHLEVEL),)
 obj-m	:= scst_local.o
 else