If the header file containing a function's prototype isn't included by the sourcefile containing the associated function, the build system complains of missing prototypes. Fixes the following W=1 kernel build warning(s): drivers/usb/early/ehci-dbgp.c: In function ‘early_dbgp_write’: drivers/usb/early/ehci-dbgp.c:915:13: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable] 915 | int chunk, ret; | ^~~ drivers/usb/early/xhci-dbc.c:600:12: warning: no previous prototype for ‘early_xdbc_parse_parameter’ [-Wmissing-prototypes] 600 | int __init early_xdbc_parse_parameter(char *s) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/early/xhci-dbc.c:653:12: warning: no previous prototype for ‘early_xdbc_setup_hardware’ [-Wmissing-prototypes] 653 | int __init early_xdbc_setup_hardware(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/early/xhci-dbc.c:910:13: warning: no previous prototype for ‘early_xdbc_register_console’ [-Wmissing-prototypes] 910 | void __init early_xdbc_register_console(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ Cc: Jann Horn <jannh@xxxxxxxxxx> Cc: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> --- drivers/usb/early/xhci-dbc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c index 04ba11fff0edc..a9932c1ff20f7 100644 --- a/drivers/usb/early/xhci-dbc.c +++ b/drivers/usb/early/xhci-dbc.c @@ -21,6 +21,7 @@ #include <linux/module.h> #include <linux/delay.h> #include <linux/kthread.h> +#include <linux/usb/xhci-dbgp.h> #include "../host/xhci.h" #include "xhci-dbc.h" -- 2.25.1
