* 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/input-polldev.h>
                     __check_latch(0x1611, 0x01))
                goto out;
 
-       printk(KERN_DEBUG "hdaps: initial latch check good (0x%02x).\n",
+       printk(KERN_DEBUG "hdaps: initial latch check good (0x%02x)\n",
               __get_latch(0x1611));
 
        outb(0x17, 0x1610);
        if (ret)
                return ret;
 
-       printk(KERN_INFO "hdaps: device successfully initialized.\n");
+       pr_info("device successfully initialized\n");
        return 0;
 }
 
 /* hdaps_dmi_match - found a match.  return one, short-circuiting the hunt. */
 static int __init hdaps_dmi_match(const struct dmi_system_id *id)
 {
-       printk(KERN_INFO "hdaps: %s detected.\n", id->ident);
+       pr_info("%s detected\n", id->ident);
        return 1;
 }
 
 static int __init hdaps_dmi_match_invert(const struct dmi_system_id *id)
 {
        hdaps_invert = (unsigned long)id->driver_data;
-       printk(KERN_INFO "hdaps: inverting axis (%u) readings.\n",
-              hdaps_invert);
+       pr_info("inverting axis (%u) readings\n", hdaps_invert);
        return hdaps_dmi_match(id);
 }
 
        int ret;
 
        if (!dmi_check_system(hdaps_whitelist)) {
-               printk(KERN_WARNING "hdaps: supported laptop not found!\n");
+               pr_warn("supported laptop not found!\n");
                ret = -ENODEV;
                goto out;
        }
        if (ret)
                goto out_idev;
 
-       printk(KERN_INFO "hdaps: driver successfully loaded.\n");
+       pr_info("driver successfully loaded\n");
        return 0;
 
 out_idev:
 out_region:
        release_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS);
 out:
-       printk(KERN_WARNING "hdaps: driver init failed (ret=%d)!\n", ret);
+       pr_warn("driver init failed (ret=%d)!\n", ret);
        return ret;
 }
 
        platform_driver_unregister(&hdaps_driver);
        release_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS);
 
-       printk(KERN_INFO "hdaps: driver unloaded.\n");
+       pr_info("driver unloaded\n");
 }
 
 module_init(hdaps_init);