Re: [RFC PATCH 1/4] PLATFORM: introduce structure to bind async platformdata to a dev path name

From: Andy Green
Date: Sat Mar 12 2011 - 18:39:38 EST


On 03/12/2011 11:29 PM, Somebody in the thread at some point said:

Hi -

On Saturday, March 12, 2011, Andy Green wrote:
This structure allows tagging arbitrary platform_data that can't be attached
to a device until after it is probed, with the device path name that it is
to be attached to.

+struct platform_async_platform_data {
+ const char *device_path;
+ void *platform_data;
+};
+
#endif /* _PLATFORM_DEVICE_H_ */

Using device paths for this purpose seems to be very fragile to me. Isn't
there any better solution?

Given that this targets board definition files which commonly do the platform_add_device for the USB bus controller synchronously, and the bus-connected devices it is aimed at are soldered on to the board connected to specific bus controllers, the bus paths are completely deterministic.

-Andy
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