From 6b2a65c7ff612035deb1012388738b54e08ab2a6 Mon Sep 17 00:00:00 2001
From: Dave Young <dyoung@redhat.com>
Date: Mon, 12 Dec 2016 16:46:14 -0800
Subject: [PATCH] lib/Kconfig.debug: make CONFIG_STRICT_DEVMEM depend on
 CONFIG_DEVMEM

With CONFIG_DEVMEM not set, CONFIG_STRICT_DEVMEM will be useless even if
it is set =y, thus let's update the dependency in Kconfig.

Link: http://lkml.kernel.org/r/20161006051217.GA31027@dhcp-128-65.nay.redhat.com
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 lib/Kconfig.debug | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 65a619e0ad5d..e40a0715f422 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2005,7 +2005,7 @@ config ARCH_HAS_DEVMEM_IS_ALLOWED
 
 config STRICT_DEVMEM
 	bool "Filter access to /dev/mem"
-	depends on MMU
+	depends on MMU && DEVMEM
 	depends on ARCH_HAS_DEVMEM_IS_ALLOWED
 	default y if TILE || PPC
 	---help---
-- 
2.20.1