platform: make better use of to_platform_{device,driver}() macros

This helps the code look more consistent and cleaner.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed, 11 insertions, 16 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 349a1013603f..62a8768d96b3 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -603,9 +603,8 @@ static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
  */
 static int platform_match(struct device *dev, struct device_driver *drv)
 {
-        struct platform_device *pdev;
+        struct platform_device *pdev = to_platform_device(dev);
 
-        pdev = container_of(dev, struct platform_device, dev);
         return (strcmp(pdev->name, drv->name) == 0);
 }
 
@@ -623,26 +622,24 @@ static int platform_legacy_suspend(struct device *dev, pm_message_t mesg)
 
 static int platform_legacy_suspend_late(struct device *dev, pm_message_t mesg)
 {
-        struct platform_driver *drv = to_platform_driver(dev->driver);
-        struct platform_device *pdev;
+        struct platform_driver *pdrv = to_platform_driver(dev->driver);
+        struct platform_device *pdev = to_platform_device(dev);
         int ret = 0;
 
-        pdev = container_of(dev, struct platform_device, dev);
-        if (dev->driver && drv->suspend_late)
-                ret = drv->suspend_late(pdev, mesg);
+        if (dev->driver && pdrv->suspend_late)
+                ret = pdrv->suspend_late(pdev, mesg);
 
         return ret;
 }
 
 static int platform_legacy_resume_early(struct device *dev)
 {
-        struct platform_driver *drv = to_platform_driver(dev->driver);
-        struct platform_device *pdev;
+        struct platform_driver *pdrv = to_platform_driver(dev->driver);
+        struct platform_device *pdev = to_platform_device(dev);
         int ret = 0;
 
-        pdev = container_of(dev, struct platform_device, dev);
-        if (dev->driver && drv->resume_early)
-                ret = drv->resume_early(pdev);
+        if (dev->driver && pdrv->resume_early)
+                ret = pdrv->resume_early(pdev);
 
         return ret;
 }
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 83d8ed39433d..c2c95e614506 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4135,10 +4135,9 @@ static int have_no_fdc = -ENODEV;
 static ssize_t floppy_cmos_show(struct device *dev,
                                 struct device_attribute *attr, char *buf)
 {
-        struct platform_device *p;
+        struct platform_device *p = to_platform_device(dev);
         int drive;
 
-        p = container_of(dev, struct platform_device,dev);
         drive = p->id;
         return sprintf(buf, "%X\n", UDP->cmos);
 }
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index ac245e7e96a5..3071a52467ed 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -389,8 +389,7 @@ static void gigaset_freecshw(struct cardstate *cs)
 
 static void gigaset_device_release(struct device *dev)
 {
-        struct platform_device *pdev =
-                container_of(dev, struct platform_device, dev);
+        struct platform_device *pdev = to_platform_device(dev);
 
         /* adapted from platform_device_release() in drivers/base/platform.c */
         //FIXME is this actually necessary?