Re: RFC: Platform data for onboard USB assets

Andy Green
2011-03-11T22:47:22Z

On 03/11/2011 10:45 PM, Somebody in the thread at some point said:
> On Fri, Mar 11, 2011 at 2:50 AM, Andy Green<andy@warmcat.com> wrote:
>> Hi -
>>
>> platform_data is a well established way in Linux to pass configuration data
>> up to on-board assets from a machine file like mach-xyz.c. It's also
>> supported to pass platform_data up to devices that are probed asynchronously
>> from busses like i2c as well, which is very handy.
>>
>> However AFAIK it's not possible to bind platform_data to probed USB devices
>> as it stands.
>
> Oh, please no.
>
> platform_data is an ugly non-type-checked anonymous pointer. If you
> need to pass data to a driver, use something better designed. A
> device tree fragment would work, or provide some kind of query api.
> platform_data is definitely the wrong approach.

$ grep platform_data drivers/* -R | wc -l
2110

-Andy