linux-kernel - Re: [PATCH 6/6] staging: media: atomisp: use printk with KERN facility level

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Date:   Tue, 20 Apr 2021 10:35:23 +0200
From:   Fabio Aiuto <fabioaiuto83@...il.com>
To:     Deepak R Varma <mh12gx2825@...il.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] staging: media: atomisp: use printk with KERN
 facility level

Hi Deepak,

On Tue, Apr 20, 2021 at 12:46:40AM +0530, Deepak R Varma wrote:
> printk() without KERN_<LEVEL> facility is flagged by checkpatch as a
> warning. It is better to use pr_info() which comes with an
> inbuilt KERN_INFO level.
> 
> Signed-off-by: Deepak R Varma <drv@...lo.com>
> ---
>  drivers/staging/media/atomisp/i2c/atomisp-gc0310.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
> index b572551f1a0d..a0f3c5c32f94 100644
> --- a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
> +++ b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
> @@ -1020,7 +1020,7 @@ static int gc0310_set_fmt(struct v4l2_subdev *sd,
>  		return -EINVAL;
>  	}
>  
> -	printk("%s: before gc0310_write_reg_array %s\n", __func__,
> +	pr_info("%s: before gc0310_write_reg_array %s\n", __func__,
>  	       gc0310_res[dev->fmt_idx].desc);

in a driver is best recommended to replace a raw printk call
with a dev_*() log. Check few lines above here to see
how it is done.


>  	ret = startup(sd);
>  	if (ret) {
> -- 
> 2.25.1
> 
> 


thank you,

fabio