[PATCH synaptics] Init num_touches to 0 on start

[Chase Douglas]

On 04/25/2012 07:56 PM, Peter Hutterer wrote:
> On Wed, Apr 25, 2012 at 06:22:07PM -0700, Chase Douglas wrote:
>> On 04/25/2012 05:36 PM, Peter Hutterer wrote:
>>> We implicitly rely on this already since we calloc the struct. Do it
>>> expliclity on DeviceOn().
>>>
>>> Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
>>> ---
>>> This half of the fix to 49161 a bit redundant but better safe than sorry,
>>> they say.
>>
>> I have not problems with it, but this is basically how things are done
>> all over the X stack. It's assumed structs are calloc'd where it isn't
>> obvious pretty much. Does this mean we have to take up arms against all
>> uninitialized members? :)
> 
> in this case the struct alloc is only called once (DEVICE_INIT) but the
> struct is re-used for each DeviceOn(). So forcing it to known zero before
> it's being used seems sensible.

Ok. Is this an actual bug fix then? my impression when I read it was
that this just made the code make more sense to read.

-- Chase