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Re: [PATCH 22/31] media: dvb-core create tuner to demod pad link in disabled state

Started byMauro Carvalho Chehab <mchehab@osg.samsung.com>
First post2016-01-28 17:40 +0100
Last post2016-01-28 21:10 +0100
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  Re: [PATCH 22/31] media: dvb-core create tuner to demod pad link in  disabled state Mauro Carvalho Chehab <mchehab@osg.samsung.com> - 2016-01-28 17:40 +0100
    Re: [PATCH 22/31] media: dvb-core create tuner to demod pad link in  disabled state Shuah Khan <shuahkh@osg.samsung.com> - 2016-01-28 21:10 +0100

#1320853 — Re: [PATCH 22/31] media: dvb-core create tuner to demod pad link in disabled state

FromMauro Carvalho Chehab <mchehab@osg.samsung.com>
Date2016-01-28 17:40 +0100
SubjectRe: [PATCH 22/31] media: dvb-core create tuner to demod pad link in disabled state
Message-ID<qVXLZ-65U-23@gated-at.bofh.it>
Em Wed,  6 Jan 2016 13:27:11 -0700
Shuah Khan <shuahkh@osg.samsung.com> escreveu:

> Create tuner to demod pad link in disabled state to help avoid
> disable step when tuner resource is requested by video or audio.
> 
> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
> ---
>  drivers/media/dvb-core/dvbdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
> index b56e008..1d10fa6 100644
> --- a/drivers/media/dvb-core/dvbdev.c
> +++ b/drivers/media/dvb-core/dvbdev.c
> @@ -593,8 +593,9 @@ int dvb_create_media_graph(struct dvb_adapter *adap)
>  	}
>  
>  	if (tuner && demod) {
> +		/* create tuner to demod link deactivated */
>  		ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT,
> -					    demod, 0, MEDIA_LNK_FL_ENABLED);
> +					    demod, 0, 0);

This is not right, as it makes no sense for DVB-only drivers.

>  		if (ret)
>  			return ret;
>  	}

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#1321013

FromShuah Khan <shuahkh@osg.samsung.com>
Date2016-01-28 21:10 +0100
Message-ID<qW13c-a7-9@gated-at.bofh.it>
In reply to#1320853
On 01/28/2016 09:38 AM, Mauro Carvalho Chehab wrote:
> Em Wed,  6 Jan 2016 13:27:11 -0700
> Shuah Khan <shuahkh@osg.samsung.com> escreveu:
> 
>> Create tuner to demod pad link in disabled state to help avoid
>> disable step when tuner resource is requested by video or audio.
>>
>> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
>> ---
>>  drivers/media/dvb-core/dvbdev.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
>> index b56e008..1d10fa6 100644
>> --- a/drivers/media/dvb-core/dvbdev.c
>> +++ b/drivers/media/dvb-core/dvbdev.c
>> @@ -593,8 +593,9 @@ int dvb_create_media_graph(struct dvb_adapter *adap)
>>  	}
>>  
>>  	if (tuner && demod) {
>> +		/* create tuner to demod link deactivated */
>>  		ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT,
>> -					    demod, 0, MEDIA_LNK_FL_ENABLED);
>> +					    demod, 0, 0);
> 
> This is not right, as it makes no sense for DVB-only drivers.

Right. Not a good change for DVB only drivers. But does make
sense on hybrid. I will make sure it gets done only in hyrbid
cases.

thanks,
-- Shuah

> 
>>  		if (ret)
>>  			return ret;
>>  	}


-- 
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@osg.samsung.com | (970) 217-8978

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