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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: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ming Lei 2009-03-13 23:06:59 +08:00 committed by Greg Kroah-Hartman
parent 006f4571a1
commit ce21c7bcd7
1 changed files with 14 additions and 1 deletions
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15
drivers/base/platform.c
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@ -247,7 +247,20 @@ int platform_device_add(struct platform_device *pdev)
else
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++) {
struct resource *p, *r = &pdev->resource[i];