From 4b5cf2b8f90faf32bbb735b545510edefce094be Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 8 Jul 2020 14:49:57 +0200 Subject: USB: serial: add sysrq break-handler dummy Add inline sysrq break-handler dummy to allow the compiler to eliminate further code when either console or sysrq support isn't enabled and to clearly mark the two sysrq functions as belonging together. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- include/linux/usb/serial.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index be73646706a9..c4ed4404335e 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -369,14 +369,18 @@ extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, #if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) extern int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch); +extern int usb_serial_handle_break(struct usb_serial_port *port); #else static inline int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) { return 0; } +static inline int usb_serial_handle_break(struct usb_serial_port *port) +{ + return 0; +} #endif -extern int usb_serial_handle_break(struct usb_serial_port *port); extern void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port, struct tty_struct *tty, unsigned int status); -- cgit v1.2.3-59-g8ed1b