cdc: Fix build warning.
In file included from drivers/usb/gadget/function/u_serial.h:16:0,
from drivers/usb/gadget/function/f_acm.c:23:
>> include/linux/usb/cdc.h:47:5: warning: 'struct usb_interface' declared inside parameter list
int buflen);
^
>> include/linux/usb/cdc.h:47:5: warning: its scope is only this definition or declaration, which is probably not what you want
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h
index cd8f2e1..959d0c8 100644
--- a/include/linux/usb/cdc.h
+++ b/include/linux/usb/cdc.h
@@ -40,7 +40,7 @@
bool phonet_magic_present;
};
-
+struct usb_interface;
int cdc_parse_cdc_header(struct usb_cdc_parsed_header *hdr,
struct usb_interface *intf,
u8 *buffer,