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Re: [PATCH 10/34] [media] DaVinci-VPBE: Check return value of a setup_if_config() call in vpbe_set_output()

Started byHans Verkuil <hverkuil@xs4all.nl>
First post2016-11-03 13:30 +0100
Last post2016-11-06 21:10 +0100
Articles 4 — 2 participants

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  Re: [PATCH 10/34] [media] DaVinci-VPBE: Check return value of a  setup_if_config() call in vpbe_set_output() Hans Verkuil <hverkuil@xs4all.nl> - 2016-11-03 13:30 +0100
    Re: [PATCH 10/34] [media] DaVinci-VPBE: Check return value of a  setup_if_config() call in vpbe_set_output() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-11-03 22:00 +0100
      Re: [PATCH 10/34] [media] DaVinci-VPBE: Check return value of a  setup_if_config() call in vpbe_set_output() Hans Verkuil <hverkuil@xs4all.nl> - 2016-11-04 09:10 +0100
        [PATCH v2 10/34] [media] DaVinci-VPBE: Check return value of a  setup_if_config() call in vpbe_set_output() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-11-06 21:10 +0100

#1514485 — Re: [PATCH 10/34] [media] DaVinci-VPBE: Check return value of a setup_if_config() call in vpbe_set_output()

FromHans Verkuil <hverkuil@xs4all.nl>
Date2016-11-03 13:30 +0100
SubjectRe: [PATCH 10/34] [media] DaVinci-VPBE: Check return value of a setup_if_config() call in vpbe_set_output()
Message-ID<szpjA-3NI-45@gated-at.bofh.it>
On 12/10/16 16:47, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Wed, 12 Oct 2016 09:56:56 +0200
>
> * A function was called over the pointer "setup_if_config" in the data
>   structure "venc_platform_data". But the return value was not used so far.
>   Thus assign it to the local variable "ret" which will be checked with
>   the next statement.
>
>   Fixes: 9a7f95ad1c946efdd7a7a72df27db738260a0fd8 ("[media] davinci vpbe: add dm365 VPBE display driver changes")
>
> * Pass a value to this function call without storing it in an intermediate
>   variable before.
>
> * Delete the local variable "if_params" which became unnecessary with
>   this refactoring.
>
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  drivers/media/platform/davinci/vpbe.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
> index 19611a2..6e7b0df 100644
> --- a/drivers/media/platform/davinci/vpbe.c
> +++ b/drivers/media/platform/davinci/vpbe.c
> @@ -227,7 +227,6 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
>  			vpbe_current_encoder_info(vpbe_dev);
>  	struct vpbe_config *cfg = vpbe_dev->cfg;
>  	struct venc_platform_data *venc_device = vpbe_dev->venc_device;
> -	u32 if_params;
>  	int enc_out_index;
>  	int sd_index;
>  	int ret = 0;
> @@ -257,8 +256,8 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
>  			goto out;
>  		}
>
> -		if_params = cfg->outputs[index].if_params;
> -		venc_device->setup_if_config(if_params);
> +		ret = venc_device->setup_if_config(cfg
> +						   ->outputs[index].if_params);

Either keep this as one line or keep the if_params temp variable. This 
odd linebreak
is ugly.

Regards,

	Hans

>  		if (ret)
>  			goto out;
>  	}
>

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#1514836

FromSF Markus Elfring <elfring@users.sourceforge.net>
Date2016-11-03 22:00 +0100
Message-ID<szxh7-sf-17@gated-at.bofh.it>
In reply to#1514485
>> From: Markus Elfring <elfring@users.sourceforge.net>
>> Date: Wed, 12 Oct 2016 09:56:56 +0200
>>
>> * A function was called over the pointer "setup_if_config" in the data
>>   structure "venc_platform_data". But the return value was not used so far.
>>   Thus assign it to the local variable "ret" which will be checked with
>>   the next statement.
>>
>>   Fixes: 9a7f95ad1c946efdd7a7a72df27db738260a0fd8 ("[media] davinci vpbe: add dm365 VPBE display driver changes")
>>
>> * Pass a value to this function call without storing it in an intermediate
>>   variable before.
>>
>> * Delete the local variable "if_params" which became unnecessary with
>>   this refactoring.
>>
>> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
>> ---
>>  drivers/media/platform/davinci/vpbe.c | 5 ++---
>>  1 file changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
>> index 19611a2..6e7b0df 100644
>> --- a/drivers/media/platform/davinci/vpbe.c
>> +++ b/drivers/media/platform/davinci/vpbe.c
>> @@ -227,7 +227,6 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
>>              vpbe_current_encoder_info(vpbe_dev);
>>      struct vpbe_config *cfg = vpbe_dev->cfg;
>>      struct venc_platform_data *venc_device = vpbe_dev->venc_device;
>> -    u32 if_params;
>>      int enc_out_index;
>>      int sd_index;
>>      int ret = 0;
>> @@ -257,8 +256,8 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
>>              goto out;
>>          }
>>
>> -        if_params = cfg->outputs[index].if_params;
>> -        venc_device->setup_if_config(if_params);
>> +        ret = venc_device->setup_if_config(cfg
>> +                           ->outputs[index].if_params);
> 
> Either keep this as one line

Will you tolerate a line length of 82 characters then?


> or keep the if_params temp variable.

My proposal was to get rid of it.


> This odd linebreak is ugly.

I am curious on how the desired changes can be integrated after a couple of update
suggestions were accepted from this patch series.

Regards,
Markus

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#1515063

FromHans Verkuil <hverkuil@xs4all.nl>
Date2016-11-04 09:10 +0100
Message-ID<szHJv-7wH-9@gated-at.bofh.it>
In reply to#1514836
On 03/11/16 21:54, SF Markus Elfring wrote:
>>> From: Markus Elfring <elfring@users.sourceforge.net>
>>> Date: Wed, 12 Oct 2016 09:56:56 +0200
>>>
>>> * A function was called over the pointer "setup_if_config" in the data
>>>   structure "venc_platform_data". But the return value was not used so far.
>>>   Thus assign it to the local variable "ret" which will be checked with
>>>   the next statement.
>>>
>>>   Fixes: 9a7f95ad1c946efdd7a7a72df27db738260a0fd8 ("[media] davinci vpbe: add dm365 VPBE display driver changes")
>>>
>>> * Pass a value to this function call without storing it in an intermediate
>>>   variable before.
>>>
>>> * Delete the local variable "if_params" which became unnecessary with
>>>   this refactoring.
>>>
>>> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
>>> ---
>>>  drivers/media/platform/davinci/vpbe.c | 5 ++---
>>>  1 file changed, 2 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
>>> index 19611a2..6e7b0df 100644
>>> --- a/drivers/media/platform/davinci/vpbe.c
>>> +++ b/drivers/media/platform/davinci/vpbe.c
>>> @@ -227,7 +227,6 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
>>>              vpbe_current_encoder_info(vpbe_dev);
>>>      struct vpbe_config *cfg = vpbe_dev->cfg;
>>>      struct venc_platform_data *venc_device = vpbe_dev->venc_device;
>>> -    u32 if_params;
>>>      int enc_out_index;
>>>      int sd_index;
>>>      int ret = 0;
>>> @@ -257,8 +256,8 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
>>>              goto out;
>>>          }
>>>
>>> -        if_params = cfg->outputs[index].if_params;
>>> -        venc_device->setup_if_config(if_params);
>>> +        ret = venc_device->setup_if_config(cfg
>>> +                           ->outputs[index].if_params);
>>
>> Either keep this as one line
>
> Will you tolerate a line length of 82 characters then?

Yes, if it improves readability, which it does.

>
>
>> or keep the if_params temp variable.
>
> My proposal was to get rid of it.
>
>
>> This odd linebreak is ugly.
>
> I am curious on how the desired changes can be integrated after a couple of update
> suggestions were accepted from this patch series.

See my previous reply to 17/34.

Regards,

	Hans

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#1515758 — [PATCH v2 10/34] [media] DaVinci-VPBE: Check return value of a setup_if_config() call in vpbe_set_output()

FromSF Markus Elfring <elfring@users.sourceforge.net>
Date2016-11-06 21:10 +0100
Subject[PATCH v2 10/34] [media] DaVinci-VPBE: Check return value of a setup_if_config() call in vpbe_set_output()
Message-ID<sABVn-1zd-3@gated-at.bofh.it>
In reply to#1515063
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sun, 6 Nov 2016 20:40:20 +0100

* A function was called over the pointer "setup_if_config" in the data
  structure "venc_platform_data". But the return value was not used so far.
  Thus assign it to the local variable "ret" which will be checked with
  the next statement.

  Fixes: 9a7f95ad1c946efdd7a7a72df27db738260a0fd8 ("[media] davinci vpbe: add dm365 VPBE display driver changes")

* Pass a value to this function call without storing it in an intermediate
  variable before.

* Delete the local variable "if_params" which became unnecessary with
  this refactoring.

Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---

v2: Keep the assignment statement on one line despite of its length
    of 82 characters.

 drivers/media/platform/davinci/vpbe.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/platform/davinci/vpbe.c b/drivers/media/platform/davinci/vpbe.c
index 19611a2..d04d6b7 100644
--- a/drivers/media/platform/davinci/vpbe.c
+++ b/drivers/media/platform/davinci/vpbe.c
@@ -227,7 +227,6 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
 			vpbe_current_encoder_info(vpbe_dev);
 	struct vpbe_config *cfg = vpbe_dev->cfg;
 	struct venc_platform_data *venc_device = vpbe_dev->venc_device;
-	u32 if_params;
 	int enc_out_index;
 	int sd_index;
 	int ret = 0;
@@ -257,5 +257,4 @@ static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
 		}
 
-		if_params = cfg->outputs[index].if_params;
-		venc_device->setup_if_config(if_params);
+		ret = venc_device->setup_if_config(cfg->outputs[index].if_params);
 		if (ret)
-- 
2.10.2

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