Similar as last patch, add a prefix to log messages so that users can
convienently know where's the msg from.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 drivers/usb/gadget/function/f_tcm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index 6e8804f04baa..760f5a02e6af 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -6,6 +6,9 @@
  *
  * Author: Sebastian Andrzej Siewior <bigeasy at linutronix dot de>
  */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/types.h>
-- 
2.51.0