1 files changed, 47 insertions, 13 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 349a101..d2198f6 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -217,6 +217,7 @@ int platform_device_add_data(struct platform_device *pdev, const void *data,
 	if (d) {
 		memcpy(d, data, size);
 		pdev->dev.platform_data = d;
+		pdev->platform_data = d;
 	}
 	return d ? 0 : -ENOMEM;
 }
@@ -246,6 +247,21 @@ int platform_device_add(struct platform_device *pdev)
 	else
 		dev_set_name(&pdev->dev, pdev->name);
 
+	/* We will remove platform_data field from struct device
+	* if all platform devices pass its platform specific data
+	* from platform_device. The conversion is going to be a
+	* long time, so we allow the two cases coexist to make
+	* this kind of fix more easily*/
+	if (pdev->platform_data && pdev->dev.platform_data) {
+		printk(KERN_ERR
+			       "%s: use which platform_data?\n",
+			       dev_name(&pdev->dev));
+	} else if (pdev->platform_data) {
+		pdev->dev.platform_data = pdev->platform_data;
+	} else if (pdev->dev.platform_data) {
+		pdev->platform_data = pdev->dev.platform_data;
+	}
+
 	for (i = 0; i < pdev->num_resources; i++) {
 		struct resource *p, *r = &pdev->resource[i];
 
@@ -584,10 +600,25 @@ static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	struct platform_device	*pdev = to_platform_device(dev);
 
-	add_uevent_var(env, "MODALIAS=platform:%s", pdev->name);
+	add_uevent_var(env, "MODALIAS=%s%s", PLATFORM_MODULE_PREFIX,
+		(pdev->id_entry) ? pdev->id_entry->name : pdev->name);
 	return 0;
 }
 
+static const struct platform_device_id *platform_match_id(
+			struct platform_device_id *id,
+			struct platform_device *pdev)
+{
+	while (id->name[0]) {
+		if (strcmp(pdev->name, id->name) == 0) {
+			pdev->id_entry = id;
+			return id;
+		}
+		id++;
+	}
+	return NULL;
+}
+
 /**
  * platform_match - bind platform device to platform driver.
  * @dev: device.
@@ -603,9 +634,14 @@ 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);
+	struct platform_driver *pdrv = to_platform_driver(drv);
 
-	pdev = container_of(dev, struct platform_device, dev);
+	/* match against the id table first */
+	if (pdrv->id_table)
+		return platform_match_id(pdrv->id_table, pdev) != NULL;
+
+	/* fall-back to driver name match */
 	return (strcmp(pdev->name, drv->name) == 0);
 }
 
@@ -623,26 +659,24 @@ 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;
 }