linux-kernel - [PATCH] Replace the dangerous to_root_device macro with an inline function

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Date:	Fri,  7 Jan 2011 15:17:47 +0100
From:	Ferenc Wagner <wferi@...f.hu>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Ferenc Wagner <wferi@...f.hu>
Subject: [PATCH] Replace the dangerous to_root_device macro with an inline function

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>
---
 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 6ed6454..742a78a 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1283,7 +1283,10 @@ 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)
 {
-- 
1.6.5

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