There is no need to have external function calls for the sysrq functions. The compiler can inline the sysrq calls such that they are entirely a NOP if CONFIG_MAGIC_SYSRQ is not set. CC: Greg Kroah-Hartman <gregkh@xxxxxxx> CC: Alan Cox <alan@xxxxxxxxxxxxxxx> CC: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> CC: Oliver Neukum <oliver@xxxxxxxxxx> CC: linux-usb@xxxxxxxxxxxxxxx Signed-off-by: Jason Wessel <jason.wessel@xxxxxxxxxxxxx> --- drivers/usb/serial/generic.c | 26 -------------------------- include/linux/usb/serial.h | 34 +++++++++++++++++++++++++++++----- 2 files changed, 29 insertions(+), 31 deletions(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 4dea9d7..0cdfccb 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -553,32 +553,6 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty) } } -int usb_serial_handle_sysrq_char(struct tty_struct *tty, - struct usb_serial_port *port, unsigned int ch) -{ - if (port->sysrq && port->port.console) { - if (ch && time_before(jiffies, port->sysrq)) { - handle_sysrq(ch, tty); - port->sysrq = 0; - return 1; - } - port->sysrq = 0; - } - return 0; -} -EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char); - -int usb_serial_handle_break(struct usb_serial_port *port) -{ - if (!port->sysrq) { - port->sysrq = jiffies + HZ*5; - return 1; - } - port->sysrq = 0; - return 0; -} -EXPORT_SYMBOL_GPL(usb_serial_handle_break); - int usb_serial_generic_resume(struct usb_serial *serial) { struct usb_serial_port *port; diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index b7682fe..60f8422 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -318,11 +318,6 @@ extern int usb_serial_generic_register(int debug); extern void usb_serial_generic_deregister(void); extern void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port, gfp_t mem_flags); -extern int usb_serial_handle_sysrq_char(struct tty_struct *tty, - struct usb_serial_port *port, - unsigned int ch); -extern int usb_serial_handle_break(struct usb_serial_port *port); - extern int usb_serial_bus_register(struct usb_serial_driver *device); extern void usb_serial_bus_deregister(struct usb_serial_driver *device); @@ -331,6 +326,35 @@ extern struct usb_serial_driver usb_serial_generic_device; extern struct bus_type usb_serial_bus_type; extern struct tty_driver *usb_serial_tty_driver; +static inline int usb_serial_handle_sysrq_char(struct tty_struct *tty, + struct usb_serial_port *port, + unsigned int ch) +{ +#ifdef CONFIG_MAGIC_SYSRQ + if (port->sysrq && port->port.console) { + if (ch && time_before(jiffies, port->sysrq)) { + handle_sysrq(ch, tty); + port->sysrq = 0; + return 1; + } + port->sysrq = 0; + } +#endif /* CONFIG_MAGIC_SYSRQ */ + return 0; +} + +static inline int usb_serial_handle_break(struct usb_serial_port *port) +{ +#ifdef CONFIG_MAGIC_SYSRQ + if (!port->sysrq) { + port->sysrq = jiffies + HZ*5; + return 1; + } + port->sysrq = 0; +#endif /* CONFIG_MAGIC_SYSRQ */ + return 0; +} + static inline void usb_serial_debug_data(int debug, struct device *dev, const char *function, int size, -- 1.6.3.1.9.g95405b -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html