linux-kernel - [PATCH] hvcs: remove driver_data direct access of struct device

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Date:	Mon, 4 May 2009 12:58:01 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	Paul Mackerras <paulus@...ba.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Roel Kluin <roel.kluin@...il.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] hvcs: remove driver_data direct access of struct device

From: Greg Kroah-Hartman <gregkh@...e.de>

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Cc: Paul Mackerras <paulus@...ba.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Roel Kluin <roel.kluin@...il.com>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/char/hvcs.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -347,7 +347,7 @@ static void __exit hvcs_module_exit(void
 
 static inline struct hvcs_struct *from_vio_dev(struct vio_dev *viod)
 {
-	return viod->dev.driver_data;
+	return dev_get_drvdata(&viod->dev);
 }
 /* The sysfs interface for the driver and devices */
 
@@ -785,7 +785,7 @@ static int __devinit hvcs_probe(
 	kref_init(&hvcsd->kref);
 
 	hvcsd->vdev = dev;
-	dev->dev.driver_data = hvcsd;
+	dev_set_drvdata(&dev->dev, hvcsd);
 
 	hvcsd->index = index;
 
@@ -831,7 +831,7 @@ static int __devinit hvcs_probe(
 
 static int __devexit hvcs_remove(struct vio_dev *dev)
 {
-	struct hvcs_struct *hvcsd = dev->dev.driver_data;
+	struct hvcs_struct *hvcsd = dev_get_drvdata(&dev->dev);
 	unsigned long flags;
 	struct tty_struct *tty;
 
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