linux-kernel - [PATCH 3/3] driver core: bus: add a new helper to_driver_private

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Message-Id: <ccc6121866d24b43fb5e413f64ee0518af47d81d.1452006001.git.geliangtang@163.com>
Date:	Tue,  5 Jan 2016 23:03:39 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Geliang Tang <geliangtang@....com>, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] driver core: bus: add a new helper to_driver_private_bus

Add a new helper to_driver_private_bus() for consistency with
to_device_private_bus() and use it in bus.c.

Signed-off-by: Geliang Tang <geliangtang@....com>
---
 drivers/base/base.h | 2 ++
 drivers/base/bus.c  | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/base/base.h b/drivers/base/base.h
index e05db38..88119d6 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -51,6 +51,8 @@ struct driver_private {
 	struct device_driver *driver;
 };
 #define to_driver(obj) container_of(obj, struct driver_private, kobj)
+#define to_driver_private_bus(obj)	\
+	container_of(obj, struct driver_private, knode_bus)
 
 /**
  * struct device_private - structure to hold the private to the driver core portions of the device structure.
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 6470eb8..ddc2b0b 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -422,7 +422,7 @@ static struct device_driver *next_driver(struct klist_iter *i)
 	struct driver_private *drv_priv;
 
 	if (n) {
-		drv_priv = container_of(n, struct driver_private, knode_bus);
+		drv_priv = to_driver_private_bus(n);
 		return drv_priv->driver;
 	}
 	return NULL;
-- 
2.5.0


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