Re: [PATCH RESEND v2 1/2] Input: touchscreen: ads7846: keep copy of pdata in private struct

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Hi Dmitry,

On 01.07.2013 03:33, Dmitry Torokhov wrote:
> On Sun, Jun 30, 2013 at 11:09:14PM +0200, Daniel Mack wrote:
>> +
>> +	if (!pdata->model)
>> +		pdata->model = 7846;
>> +
>> +	if (!pdata->vref_delay_usecs)
>> +		pdata->vref_delay_usecs = 100;
>> +
>> +	if (!pdata->x_plate_ohms)
>> +		pdata->x_plate_ohms = 400;
>> +
>> +	if (!pdata->pressure_max)
>> +		pdata->pressure_max = ~0;
> 
> We should not be changing the platform data as the device does not own
> it and it may well be declared as a constant structure.

We don't change the platform data that is passed in via the driver core.
We keep a copy of it in our private strucz (that's what the subject
says) and in case of DT, we modify that copy. The passed pdata is left
untouched.



Thanks,
Daniel

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