[05/14,media] atmel-isi: Update error check for unsigned variables

  Checking '< 0' for unsigned variables always returns false. For error
codes, use IS_ERR_VALUE() instead.

CC: Mauro Carvalho Chehab <mchehab@infradead.org>
CC: linux-media@vger.kernel.org
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
---
 drivers/media/platform/soc_camera/atmel-isi.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
  

On Fri, 16 Nov 2012, Tushar Behera wrote:

> Checking '< 0' for unsigned variables always returns false. For error
> codes, use IS_ERR_VALUE() instead.

Wouldn't just changing "irq" type to "int" also work? I think that would 
be a more straight-forward solution. If however there are strong arguments 
against that, I'm fine with this fix too.

Thanks
Guennadi

> 
> CC: Mauro Carvalho Chehab <mchehab@infradead.org>
> CC: linux-media@vger.kernel.org
> Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
> ---
>  drivers/media/platform/soc_camera/atmel-isi.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
> index 6274a91..5bd65df 100644
> --- a/drivers/media/platform/soc_camera/atmel-isi.c
> +++ b/drivers/media/platform/soc_camera/atmel-isi.c
> @@ -1020,7 +1020,7 @@ static int __devinit atmel_isi_probe(struct platform_device *pdev)
>  	isi_writel(isi, ISI_CTRL, ISI_CTRL_DIS);
>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq < 0) {
> +	if (IS_ERR_VALUE(irq)) {
>  		ret = irq;
>  		goto err_req_irq;
>  	}
> -- 
> 1.7.4.1
> 
> --
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---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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On 11/18/2012 04:46 AM, Guennadi Liakhovetski wrote:
> On Fri, 16 Nov 2012, Tushar Behera wrote:
> 
>> Checking '< 0' for unsigned variables always returns false. For error
>> codes, use IS_ERR_VALUE() instead.
> 
> Wouldn't just changing "irq" type to "int" also work? I think that would 
> be a more straight-forward solution. If however there are strong arguments 
> against that, I'm fine with this fix too.
> 

By changing irq to signed variable, we would get compilation warning in
subsequent line (request_irq).

> Thanks
> Guennadi
> 
>>
>> CC: Mauro Carvalho Chehab <mchehab@infradead.org>
>> CC: linux-media@vger.kernel.org
>> Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
>> ---
>>  drivers/media/platform/soc_camera/atmel-isi.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
>> index 6274a91..5bd65df 100644
>> --- a/drivers/media/platform/soc_camera/atmel-isi.c
>> +++ b/drivers/media/platform/soc_camera/atmel-isi.c
>> @@ -1020,7 +1020,7 @@ static int __devinit atmel_isi_probe(struct platform_device *pdev)
>>  	isi_writel(isi, ISI_CTRL, ISI_CTRL_DIS);
>>  
>>  	irq = platform_get_irq(pdev, 0);
>> -	if (irq < 0) {
>> +	if (IS_ERR_VALUE(irq)) {
>>  		ret = irq;
>>  		goto err_req_irq;
>>  	}
>> -- 
>> 1.7.4.1
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
> 
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
>