[Xen-devel] [PATCH] xen: remove driver_data direct access of struct device from more drivers

[Greg Kroah-Hartman <gregkh@xxxxxxx>]

From: Greg Kroah-Hartman <gregkh@xxxxxxx>

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: xen-devel@xxxxxxxxxxxxxxxxxxx
Cc: virtualization@xxxxxxxxxxxxxx
Cc: Chris Wright <chrisw@xxxxxxxxxxxx>
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 drivers/input/xen-kbdfront.c |    8 ++++----
 drivers/net/xen-netfront.c   |   10 +++++-----
 drivers/video/xen-fbfront.c  |    8 ++++----
 3 files changed, 13 insertions(+), 13 deletions(-)

--- a/drivers/input/xen-kbdfront.c
+++ b/drivers/input/xen-kbdfront.c
@@ -114,7 +114,7 @@ static int __devinit xenkbd_probe(struct
                xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure");
                return -ENOMEM;
        }
-       dev->dev.driver_data = info;
+       dev_set_drvdata(&dev->dev, info);
        info->xbdev = dev;
        info->irq = -1;
        snprintf(info->phys, sizeof(info->phys), "xenbus/%s", dev->nodename);
@@ -186,7 +186,7 @@ static int __devinit xenkbd_probe(struct
 
 static int xenkbd_resume(struct xenbus_device *dev)
 {
-       struct xenkbd_info *info = dev->dev.driver_data;
+       struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
 
        xenkbd_disconnect_backend(info);
        memset(info->page, 0, PAGE_SIZE);
@@ -195,7 +195,7 @@ static int xenkbd_resume(struct xenbus_d
 
 static int xenkbd_remove(struct xenbus_device *dev)
 {
-       struct xenkbd_info *info = dev->dev.driver_data;
+       struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
 
        xenkbd_disconnect_backend(info);
        if (info->kbd)
@@ -266,7 +266,7 @@ static void xenkbd_disconnect_backend(st
 static void xenkbd_backend_changed(struct xenbus_device *dev,
                                   enum xenbus_state backend_state)
 {
-       struct xenkbd_info *info = dev->dev.driver_data;
+       struct xenkbd_info *info = dev_get_drvdata(&dev->dev);
        int ret, val;
 
        switch (backend_state) {
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1212,7 +1212,7 @@ static int __devinit netfront_probe(stru
        }
 
        info = netdev_priv(netdev);
-       dev->dev.driver_data = info;
+       dev_set_drvdata(&dev->dev, info);
 
        err = register_netdev(info->netdev);
        if (err) {
@@ -1233,7 +1233,7 @@ static int __devinit netfront_probe(stru
 
  fail:
        free_netdev(netdev);
-       dev->dev.driver_data = NULL;
+       dev_set_drvdata(&dev->dev, NULL);
        return err;
 }
 
@@ -1275,7 +1275,7 @@ static void xennet_disconnect_backend(st
  */
 static int netfront_resume(struct xenbus_device *dev)
 {
-       struct netfront_info *info = dev->dev.driver_data;
+       struct netfront_info *info = dev_get_drvdata(&dev->dev);
 
        dev_dbg(&dev->dev, "%s\n", dev->nodename);
 
@@ -1600,7 +1600,7 @@ static int xennet_connect(struct net_dev
 static void backend_changed(struct xenbus_device *dev,
                            enum xenbus_state backend_state)
 {
-       struct netfront_info *np = dev->dev.driver_data;
+       struct netfront_info *np = dev_get_drvdata(&dev->dev);
        struct net_device *netdev = np->netdev;
 
        dev_dbg(&dev->dev, "%s\n", xenbus_strstate(backend_state));
@@ -1774,7 +1774,7 @@ static struct xenbus_device_id netfront_
 
 static int __devexit xennet_remove(struct xenbus_device *dev)
 {
-       struct netfront_info *info = dev->dev.driver_data;
+       struct netfront_info *info = dev_get_drvdata(&dev->dev);
 
        dev_dbg(&dev->dev, "%s\n", dev->nodename);
 
--- a/drivers/video/xen-fbfront.c
+++ b/drivers/video/xen-fbfront.c
@@ -384,7 +384,7 @@ static int __devinit xenfb_probe(struct 
                fb_size = XENFB_DEFAULT_FB_LEN;
        }
 
-       dev->dev.driver_data = info;
+       dev_set_drvdata(&dev->dev, info);
        info->xbdev = dev;
        info->irq = -1;
        info->x1 = info->y1 = INT_MAX;
@@ -503,7 +503,7 @@ xenfb_make_preferred_console(void)
 
 static int xenfb_resume(struct xenbus_device *dev)
 {
-       struct xenfb_info *info = dev->dev.driver_data;
+       struct xenfb_info *info = dev_get_drvdata(&dev->dev);
 
        xenfb_disconnect_backend(info);
        xenfb_init_shared_page(info, info->fb_info);
@@ -512,7 +512,7 @@ static int xenfb_resume(struct xenbus_de
 
 static int xenfb_remove(struct xenbus_device *dev)
 {
-       struct xenfb_info *info = dev->dev.driver_data;
+       struct xenfb_info *info = dev_get_drvdata(&dev->dev);
 
        xenfb_disconnect_backend(info);
        if (info->fb_info) {
@@ -621,7 +621,7 @@ static void xenfb_disconnect_backend(str
 static void xenfb_backend_changed(struct xenbus_device *dev,
                                  enum xenbus_state backend_state)
 {
-       struct xenfb_info *info = dev->dev.driver_data;
+       struct xenfb_info *info = dev_get_drvdata(&dev->dev);
        int val;
 
        switch (backend_state) {

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