Re: [PATCH] media: ov5640: add error trace in case of i2c read failure

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On Wed, Jan 31, 2018 at 12:19:24PM +0100, Hugues Fruchet wrote:
> Add an error trace in ov5640_read_reg() in case of i2c_transfer()
> failure.
> 
> Signed-off-by: Hugues Fruchet <hugues.fruchet@xxxxxx>
> ---
>  drivers/media/i2c/ov5640.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
> index 99a5902..882a7c3 100644
> --- a/drivers/media/i2c/ov5640.c
> +++ b/drivers/media/i2c/ov5640.c
> @@ -868,8 +868,11 @@ static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)
>  	msg[1].len = 1;
>  
>  	ret = i2c_transfer(client->adapter, msg, 2);
> -	if (ret < 0)
> +	if (ret < 0) {
> +		v4l2_err(&sensor->sd, "%s: error: reg=%x\n",

The driver uses dev_ macros almost universally, how about doing the same
here?

> +			 __func__, reg);
>  		return ret;
> +	}
>  
>  	*val = buf[0];
>  	return 0;
> -- 
> 1.9.1
> 

-- 
Sakari Ailus
e-mail: sakari.ailus@xxxxxx



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