Commit ce21c7bc authored by Ming Lei's avatar Ming Lei Committed by Greg Kroah-Hartman

driver core: fix passing platform_data

We will remove platform_data field from struct device until
all platform devices pass its specific data from platfom_device
and all platform drivers use platform specific data passed by
platform_device->platform_data. This kind of conversion will
need a long time, for thousands of files is affected.

To make the conversion easily, we allow platform specific data
passed by struct device or struct platform_device and platform
driver may use it from struct device or struct platform_device.
Signed-off-by: default avatarMing Lei <tom.leiming@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 006f4571
...@@ -247,7 +247,20 @@ int platform_device_add(struct platform_device *pdev) ...@@ -247,7 +247,20 @@ int platform_device_add(struct platform_device *pdev)
else else
dev_set_name(&pdev->dev, pdev->name); dev_set_name(&pdev->dev, pdev->name);
pdev->platform_data = pdev->dev.platform_data; /* 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++) { for (i = 0; i < pdev->num_resources; i++) {
struct resource *p, *r = &pdev->resource[i]; struct resource *p, *r = &pdev->resource[i];
......
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