linux-kernel - [PATCH] livepatch: match return value to function signature

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Date:	Mon, 11 May 2015 07:52:29 +0200
From:	Nicholas Mc Guire <hofrat@...dl.org>
To:	Josh Poimboeuf <jpoimboe@...hat.com>
Cc:	Seth Jennings <sjenning@...hat.com>, Jiri Kosina <jkosina@...e.cz>,
	Vojtech Pavlik <vojtech@...e.cz>,
	live-patching@...r.kernel.org, linux-kernel@...r.kernel.org,
	Nicholas Mc Guire <hofrat@...dl.org>
Subject: [PATCH] livepatch: match return value to function signature

klp_initialized() should return bool but is actually returning 
struct kobject * - convert it to a boolean explicitly.

Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>
---

static code checking was not happy with
 ./kernel/livepatch/core.c:131 WARNING: return of wrong type
                               bool != struct kobject *

This adds !! to explicitly convert to boolean type.

Patch was compile tested with x86_64_defconfig

patch is against 4.1-rc2 (localversion-next is -next-20150508)

 kernel/livepatch/core.c     |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 0e7c23c..c0ae3d8 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -128,7 +128,7 @@ static bool klp_is_patch_registered(struct klp_patch *patch)
 
 static bool klp_initialized(void)
 {
-	return klp_root_kobj;
+	return !!klp_root_kobj;
 }
 
 struct klp_find_arg {
-- 
1.7.10.4

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