linux-kernel - [PATCH 1/2] platform: make better use of to_platform

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Date:	Tue, 30 Dec 2008 15:03:08 +0800
From:	"Eric Miao" <eric.y.miao@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] 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@...vell.com>
---
 drivers/base/platform.c            |   21 +++++++++------------
 drivers/block/floppy.c             |    3 +--
 drivers/isdn/gigaset/ser-gigaset.c |    3 +--
 3 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index dfcbfe5..d0591f0 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -606,9 +606,8 @@ 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 (strncmp(pdev->name, drv->name, BUS_ID_SIZE) == 0);
 }

@@ -626,26 +625,24 @@ 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 cf29cc4..9c3c5c7 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4133,10 +4133,9 @@ 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 ac245e7..3071a52 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?
-- 
1.6.0.4

View attachment "0001-platform-make-better-use-of-to_platform_-device-dri.patch" of type "text/x-diff" (3399 bytes)