linux-kernel - Re: [PATCH v3] Input: bcm5974 - Driver cleanup by replacing dprintk with dev

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Message-ID: <ecba3708-e233-470e-b3ff-d5212286d437@gmail.com>
Date: Mon, 15 Sep 2025 19:44:24 +0530
From: bhanuseshukumar <bhanuseshukumar@...il.com>
To: rydberg@...math.org, dmitry.torokhov@...il.com
Cc: linux-input@...r.kernel.org, skhan@...uxfoundation.org,
 linux-kernel@...r.kernel.org, linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [PATCH v3] Input: bcm5974 - Driver cleanup by replacing dprintk
 with dev_dbg

On 03/09/25 14:25, Bhanu Seshu Kumar Valluri wrote:
> Debug printk messages are converted to dev_dbg based logs
> for better control over debug messages using dynamic logging.
> 
> Signed-off-by: Bhanu Seshu Kumar Valluri <bhanuseshukumar@...il.com>
> ---
>  Changes in V3
>  1. Name in the from tag & signed-off tag are matched.
>  
>  Note: This patch is tested for compilation.
>  v1 patch : https://lore.kernel.org/all/20250902164351.36828-1-bhanuseshukumar@gmail.com/
>  v2 patch : https://lore.kernel.org/all/20250903061908.41910-1-bhanuseshukumar@gmail.com/ 
> 
>  drivers/input/mouse/bcm5974.c | 18 +++++-------------
>  1 file changed, 5 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
> index dfdfb59cc8b5..03e112666c2e 100644
> --- a/drivers/input/mouse/bcm5974.c
> +++ b/drivers/input/mouse/bcm5974.c
> @@ -156,13 +156,6 @@ MODULE_AUTHOR("Henrik Rydberg");
>  MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver");
>  MODULE_LICENSE("GPL");
>  
> -#define dprintk(level, format, a...)\
> -	{ if (debug >= level) printk(KERN_DEBUG format, ##a); }
> -
> -static int debug = 1;
> -module_param(debug, int, 0644);
> -MODULE_PARM_DESC(debug, "Activate debugging output");
> -
>  /* button data structure */
>  struct bt_data {
>  	u8 unknown1;		/* constant */
> @@ -550,8 +543,7 @@ static int report_bt_state(struct bcm5974 *dev, int size)
>  	if (size != sizeof(struct bt_data))
>  		return -EIO;
>  
> -	dprintk(7,
> -		"bcm5974: button data: %x %x %x %x\n",
> +	dev_dbg(&dev->intf->dev, "button data: %x %x %x %x\n",
>  		dev->bt_data->unknown1, dev->bt_data->button,
>  		dev->bt_data->rel_x, dev->bt_data->rel_y);
>  
> @@ -688,7 +680,7 @@ static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on)
>  		goto out;
>  	}
>  
> -	dprintk(2, "bcm5974: switched to %s mode.\n",
> +	dev_dbg(&dev->intf->dev, "switched to %s mode.\n",
>  		on ? "wellspring" : "normal");
>  
>   out:
> @@ -718,7 +710,7 @@ static void bcm5974_irq_button(struct urb *urb)
>  	}
>  
>  	if (report_bt_state(dev, dev->bt_urb->actual_length))
> -		dprintk(1, "bcm5974: bad button package, length: %d\n",
> +		dev_dbg(&intf->dev, "bad button package, length: %d\n",
>  			dev->bt_urb->actual_length);
>  
>  exit:
> @@ -753,7 +745,7 @@ static void bcm5974_irq_trackpad(struct urb *urb)
>  		goto exit;
>  
>  	if (report_tp_state(dev, dev->tp_urb->actual_length))
> -		dprintk(1, "bcm5974: bad trackpad package, length: %d\n",
> +		dev_dbg(&intf->dev, "bad trackpad package, length: %d\n",
>  			dev->tp_urb->actual_length);
>  
>  exit:
> @@ -786,7 +778,7 @@ static int bcm5974_start_traffic(struct bcm5974 *dev)
>  
>  	error = bcm5974_wellspring_mode(dev, true);
>  	if (error) {
> -		dprintk(1, "bcm5974: mode switch failed\n");
> +		dev_dbg(&dev->intf->dev, "mode switch failed\n");
>  		goto err_out;
>  	}
>  
Just want to know the status of this patch. Let me know if any further modifications needed.