diff --git a/drivers/sh/pfc/core.c b/drivers/sh/pfc/core.c
index 02e9f62e2b28028cc2c46a07d0d23536c4cf8e85..b81d33535d242c91eccff7baa8237ae66482d754 100644
--- a/drivers/sh/pfc/core.c
+++ b/drivers/sh/pfc/core.c
@@ -8,7 +8,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define pr_fmt(fmt) "sh_pfc " KBUILD_MODNAME ": " fmt
 
 #include <linux/errno.h>
 #include <linux/kernel.h>
diff --git a/drivers/sh/pfc/gpio.c b/drivers/sh/pfc/gpio.c
index f37f0c6d89b352bd1344b5f52a1b011cdb40cc00..62bca98474a9f11f50f3bec4ea041488dcc633b7 100644
--- a/drivers/sh/pfc/gpio.c
+++ b/drivers/sh/pfc/gpio.c
@@ -8,7 +8,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define pr_fmt(fmt) "sh_pfc " KBUILD_MODNAME ": " fmt
 
 #include <linux/init.h>
 #include <linux/gpio.h>
diff --git a/drivers/sh/pfc/pinctrl.c b/drivers/sh/pfc/pinctrl.c
index f62659aa68cc982f5487f19ce61b347356ba38ee..fe1750eb6f1fa6741289e74caeaeae3203b2746c 100644
--- a/drivers/sh/pfc/pinctrl.c
+++ b/drivers/sh/pfc/pinctrl.c
@@ -7,7 +7,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define pr_fmt(fmt) "sh_pfc " KBUILD_MODNAME ": " fmt
 
 #include <linux/init.h>
 #include <linux/module.h>