rtc: use dev_warn()/dev_dbg()/pr_err() instead of printk()

Fix the checkpatch warning as below:

  WARNING: Prefer netdev_err(netdev, ... then dev_err(dev, ... then pr_err(...  to printk(KERN_ERR ...

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 26388f182594..9b742d3ffb94 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -11,6 +11,8 @@
  * published by the Free Software Foundation.
 */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/rtc.h>
 #include <linux/kdev_t.h>
@@ -261,7 +263,7 @@ static int __init rtc_init(void)
 {
         rtc_class = class_create(THIS_MODULE, "rtc");
         if (IS_ERR(rtc_class)) {
-                printk(KERN_ERR "%s: couldn't create class\n", __FILE__);
+                pr_err("couldn't create class\n");
                 return PTR_ERR(rtc_class);
         }
         rtc_class->suspend = rtc_suspend;