driver core: move platform_data into platform_device
This patch moves platform_data from struct device into
struct platform_device, based on the two ideas:
1. Now all platform_driver is registered by platform_driver_register,
which makes probe()/release()/... of platform_driver passed parameter
of platform_device *, so platform driver can get platform_data from
platform_device;
2. Other kind of devices do not need to use platform_data, we can
decrease size of device if moving it to platform_device.
Taking into consideration of thousands of files to be fixed and they
can't be finished in one night(maybe it will take a long time), so we
keep platform_data in device to allow two kind of cases coexist until
all platform devices pass its platfrom data from
platform_device->platform_data.
All patches to do this kind of conversion are welcome.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 76aef7b..76e470a 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -20,6 +20,7 @@
struct device dev;
u32 num_resources;
struct resource * resource;
+ void *platform_data;
struct platform_device_id *id_entry;
};