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USB: serial: inline sysrq dummy function
Inline the dummy sysrq character handling when either console support or magic-sysrq support isn't enabled to allow the compiler to eliminate unused code. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
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@ -571,7 +571,7 @@ int usb_serial_generic_get_icount(struct tty_struct *tty,
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}
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EXPORT_SYMBOL_GPL(usb_serial_generic_get_icount);
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#ifdef CONFIG_MAGIC_SYSRQ
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#if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
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int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
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{
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if (port->sysrq) {
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@ -584,13 +584,8 @@ int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
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}
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return 0;
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}
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#else
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int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
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{
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return 0;
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}
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#endif
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EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char);
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#endif
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int usb_serial_handle_break(struct usb_serial_port *port)
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{
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@ -365,8 +365,17 @@ extern int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port,
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extern void usb_serial_generic_process_read_urb(struct urb *urb);
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extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port,
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void *dest, size_t size);
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#if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
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extern int usb_serial_handle_sysrq_char(struct usb_serial_port *port,
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unsigned int ch);
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#else
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static inline int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
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{
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return 0;
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}
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#endif
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extern int usb_serial_handle_break(struct usb_serial_port *port);
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extern void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port,
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struct tty_struct *tty,
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