Re: [PATCH] media: davinci: vpif: add check for NULL handler

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On Thu August 16 2012 16:02:00 Prabhakar Lad wrote:
> From: Lad, Prabhakar <prabhakar.lad@xxxxxx>
> 
> Signed-off-by: Lad, Prabhakar <prabhakar.lad@xxxxxx>
> Signed-off-by: Manjunath Hadli <manjunath.hadli@xxxxxx>
> Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>

Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>

Regards,

	Hans

> ---
>  drivers/media/video/davinci/vpif_capture.c |   12 +++++++-----
>  drivers/media/video/davinci/vpif_display.c |   14 ++++++++------
>  2 files changed, 15 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c
> index 266025e..a87b7a5 100644
> --- a/drivers/media/video/davinci/vpif_capture.c
> +++ b/drivers/media/video/davinci/vpif_capture.c
> @@ -311,12 +311,14 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
>  	}
>  
>  	/* configure 1 or 2 channel mode */
> -	ret = vpif_config_data->setup_input_channel_mode
> -					(vpif->std_info.ycmux_mode);
> +	if (vpif_config_data->setup_input_channel_mode) {
> +		ret = vpif_config_data->setup_input_channel_mode
> +						(vpif->std_info.ycmux_mode);
>  
> -	if (ret < 0) {
> -		vpif_dbg(1, debug, "can't set vpif channel mode\n");
> -		return ret;
> +		if (ret < 0) {
> +			vpif_dbg(1, debug, "can't set vpif channel mode\n");
> +			return ret;
> +		}
>  	}
>  
>  	/* Call vpif_set_params function to set the parameters and addresses */
> diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c
> index e129c98..1e35f92 100644
> --- a/drivers/media/video/davinci/vpif_display.c
> +++ b/drivers/media/video/davinci/vpif_display.c
> @@ -280,12 +280,14 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
>  	}
>  
>  	/* clock settings */
> -	ret =
> -	    vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode,
> -					ch->vpifparams.std_info.hd_sd);
> -	if (ret < 0) {
> -		vpif_err("can't set clock\n");
> -		return ret;
> +	if (vpif_config_data->set_clock) {
> +		ret =
> +		vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode,
> +						ch->vpifparams.std_info.hd_sd);
> +		if (ret < 0) {
> +			vpif_err("can't set clock\n");
> +			return ret;
> +		}
>  	}
>  
>  	/* set the parameters and addresses */
> 
--
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