[PATCH] I2C: Improve core debugging messages

The debugging messages in i2c-core are more confusing than helpful. Some
lack their trailing newline, some lack a prefix, some are redundant,
some lack precious information. Here is my attempt to introduce some
standardization in there.

I also changed two messages in i2c-dev to make it clear they come from
i2c-dev.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index bc5d557..aa7a4fa 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -434,7 +434,8 @@
 
 	devfs_mk_cdev(MKDEV(I2C_MAJOR, i2c_dev->minor),
 			S_IFCHR|S_IRUSR|S_IWUSR, "i2c/%d", i2c_dev->minor);
-	dev_dbg(&adap->dev, "Registered as minor %d\n", i2c_dev->minor);
+	pr_debug("i2c-dev: adapter [%s] registered as minor %d\n",
+		 adap->name, i2c_dev->minor);
 
 	/* register this i2c device with the driver core */
 	i2c_dev->adap = adap;
@@ -471,7 +472,7 @@
 	wait_for_completion(&i2c_dev->released);
 	kfree(i2c_dev);
 
-	dev_dbg(&adap->dev, "Adapter unregistered\n");
+	pr_debug("i2c-dev: adapter [%s] unregistered\n", adap->name);
 	return 0;
 }