linux-kernel - [PATCH v2 1/2] cxl: fix build for GCC 4.6.x

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Message-Id: <1452277810-98195-1-git-send-email-computersforpeace@gmail.com>
Date:	Fri,  8 Jan 2016 10:30:09 -0800
From:	Brian Norris <computersforpeace@...il.com>
To:	Ian Munsie <imunsie@....ibm.com>,
	Michael Neuling <mikey@...ling.org>
Cc:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
	Brian Norris <computersforpeace@...il.com>,
	Arnd Bergmann <arnd@...db.de>, Joe Perches <joe@...ches.com>,
	Michal Marek <mmarek@...e.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Anton Blanchard <anton@....ibm.com>
Subject: [PATCH v2 1/2] cxl: fix build for GCC 4.6.x

GCC 4.6.3 does not support -Wno-unused-const-variable. Instead, use the
kbuild infrastructure that checks if this options exists.

Fixes: 2cd55c68c0a4 ("cxl: Fix build failure due to -Wunused-variable behaviour change")
Suggested-by: Michal Marek <mmarek@...e.com>
Suggested-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Brian Norris <computersforpeace@...il.com>
---
v2: don't remove -Werror

 drivers/misc/cxl/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/cxl/Makefile b/drivers/misc/cxl/Makefile
index 6982f603fadc..ab6f392d3504 100644
--- a/drivers/misc/cxl/Makefile
+++ b/drivers/misc/cxl/Makefile
@@ -1,4 +1,4 @@
-ccflags-y := -Werror -Wno-unused-const-variable
+ccflags-y := -Werror $(call cc-disable-warning, unused-const-variable)
 
 cxl-y				+= main.o file.o irq.o fault.o native.o
 cxl-y				+= context.o sysfs.o debugfs.o pci.o trace.o
-- 
2.6.0.rc2.230.g3dd15c0