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

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Message-Id: <20250903085506.6042-1-bhanuseshukumar@gmail.com>
Date: Wed,  3 Sep 2025 14:25:06 +0530
From: Bhanu Seshu Kumar Valluri <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,
	bhanuseshukumar@...il.com
Subject: [PATCH v3] Input: bcm5974 - Driver cleanup by replacing dprintk with dev_dbg

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;
 	}
 
-- 
2.34.1