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| author | Johan Hovold <johan@kernel.org> | 2020-07-08 15:49:57 +0300 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2020-07-09 10:20:10 +0300 |
| commit | 4b5cf2b8f90faf32bbb735b545510edefce094be (patch) | |
| tree | dfa1cc3cf803faab3c76096b79e59d2ecf3e2a23 /include/linux/usb/serial.h | |
| parent | 4fbfbdb5726ff15bdce1c371efa1281b28322f64 (diff) | |
| download | linux-4b5cf2b8f90faf32bbb735b545510edefce094be.tar.xz | |
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 <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'include/linux/usb/serial.h')
| -rw-r--r-- | include/linux/usb/serial.h | 6 |
1 files changed, 5 insertions, 1 deletions
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); |