[Intel-gfx] [PATCH v4 14/23] drm/tilcdc: Provide ddc symlink in connector sysfs directory

[Andrzej Pietrasiewicz]

Hi Sam,

W dniu 23.07.2019 o 11:05, Sam Ravnborg pisze:
> Hi Andrzej
> 
> On Thu, Jul 11, 2019 at 01:26:41PM +0200, Andrzej Pietrasiewicz wrote:
>> Use the ddc pointer provided by the generic connector.
>>
>> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p at collabora.com>
>> ---
>>   drivers/gpu/drm/tilcdc/tilcdc_tfp410.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
>> index 62d014c20988..c373edb95666 100644
>> --- a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
>> +++ b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
>> @@ -219,6 +219,7 @@ static struct drm_connector *tfp410_connector_create(struct drm_device *dev,
>>   	tfp410_connector->mod = mod;
>>   
>>   	connector = &tfp410_connector->base;
>> +	connector->ddc = mod->i2c;
>>   
>>   	drm_connector_init(dev, connector, &tfp410_connector_funcs,
>>   			DRM_MODE_CONNECTOR_DVID);
> 
> When reading this code, it looks strange that we set connector->ddc
> *before* the call to init the connector.
> One could risk that drm_connector_init() used memset(..) to clear all
> fields or so, and it would break this order.

I verified the code of drm_connector_init() and cannot find any memset()
invocations there. What is your actual concern?

Andrzej