linux-kernel - Re: [PATCH 3/5] [media] v4l: vsp1: separate links creation from entities init

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Date:	Mon, 7 Dec 2015 12:08:27 -0300
From:	Javier Martinez Canillas <javier@....samsung.com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:	linux-kernel@...r.kernel.org,
	Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	linux-sh@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 3/5] [media] v4l: vsp1: separate links creation from
 entities init

Hello Laurent,

On 12/05/2015 11:51 PM, Laurent Pinchart wrote:
> Hi Javier,
> 
> Thank you for the patch.
>

Thanks for your feedback.
 
> On Thursday 03 September 2015 18:00:34 Javier Martinez Canillas wrote:
>> The vsp1 driver initializes the entities and creates the pads links
>> before the entities are registered with the media device. This doesn't
>> work now that object IDs are used to create links so the media_device
>> has to be set.
>>
>> Split out the pads links creation from the entity initialization so are
>> made after the entities registration.
>>
>> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
>> ---
>>
>>  drivers/media/platform/vsp1/vsp1_drv.c  | 14 ++++++++++--
>>  drivers/media/platform/vsp1/vsp1_rpf.c  | 29 ++++++++++++++++--------
>>  drivers/media/platform/vsp1/vsp1_rwpf.h |  5 +++++
>>  drivers/media/platform/vsp1/vsp1_wpf.c  | 40 +++++++++++++++++-------------
>>  4 files changed, 62 insertions(+), 26 deletions(-)
>>
>> diff --git a/drivers/media/platform/vsp1/vsp1_drv.c
>> b/drivers/media/platform/vsp1/vsp1_drv.c index 2aa427d3ff39..8f995d267646
>> 100644
>> --- a/drivers/media/platform/vsp1/vsp1_drv.c
>> +++ b/drivers/media/platform/vsp1/vsp1_drv.c
>> @@ -260,9 +260,19 @@ static int vsp1_create_entities(struct vsp1_device
>> *vsp1)
>>
>>  	/* Create links. */
>>  	list_for_each_entry(entity, &vsp1->entities, list_dev) {
>> -		if (entity->type == VSP1_ENTITY_LIF ||
>> -		    entity->type == VSP1_ENTITY_RPF)
>> +		if (entity->type == VSP1_ENTITY_LIF) {
>> +			ret = vsp1_wpf_create_pads_links(vsp1, entity);
> 
> Could you please s/pads_links/links/ ? There's no other type of links handled 
> by the driver.
>

Sure, I'll do that for all the drivers that only handle pad links.
 
>> +			if (ret < 0)
>> +				goto done;
>> +			continue;
> 
> I would use
> 
> 	} else if (...) {
> 
> instead of a continue.
>

Yes, that will be better indeed.
 
>> +		}
>> +
>> +		if (entity->type == VSP1_ENTITY_RPF) {
>> +			ret = vsp1_rpf_create_pads_links(vsp1, entity);
>> +			if (ret < 0)
>> +				goto done;
>>  			continue;
> 
> Same here.
>

Ok.
 
> Apart from that,
> 
> Acked-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
>

Thanks.

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America
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