linux-kernel - [PATCH 18/50] driver core: Replace the dangerous to_root

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Message-Id: <1300309888-5028-18-git-send-email-gregkh@suse.de>
Date:	Wed, 16 Mar 2011 14:10:56 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Ferenc Wagner <wferi@...f.hu>, Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 18/50] driver core: Replace the dangerous to_root_device macro with an inline function

From: Ferenc Wagner <wferi@...f.hu>

The original macro worked only when applied to variables named 'dev'.
While this could have been fixed by simply renaming the macro argument,
a more type-safe replacement by an inline function is preferred.

Signed-off-by: Ferenc Wagner <wferi@...f.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/core.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 9cd3b5c..81b78ed 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1320,7 +1320,10 @@ struct root_device
 	struct module *owner;
 };
 
-#define to_root_device(dev) container_of(dev, struct root_device, dev)
+inline struct root_device *to_root_device(struct device *d)
+{
+	return container_of(d, struct root_device, dev);
+}
 
 static void root_device_release(struct device *dev)
 {
-- 
1.7.4.1

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