diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 5516c59..2d12bf9 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -2195,7 +2195,7 @@
 	if (size == 0)
 		return NULL;
 
-	gb = (struct gs_buf *)kmalloc(sizeof(struct gs_buf), kmalloc_flags);
+	gb = kmalloc(sizeof(struct gs_buf), kmalloc_flags);
 	if (gb == NULL)
 		return NULL;