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| author | Johan Hovold <johan@kernel.org> | 2020-07-08 14:49:56 +0200 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2020-07-09 09:20:06 +0200 |
| commit | 4fbfbdb5726ff15bdce1c371efa1281b28322f64 (patch) | |
| tree | a0c36c4a106929f4b9d5604f247d46e6a718691a | |
| parent | 8c6a223186a6c3fe7cd381ef7e1d60ea6fd8fd52 (diff) | |
| download | linux-4fbfbdb5726ff15bdce1c371efa1281b28322f64.tar.gz linux-4fbfbdb5726ff15bdce1c371efa1281b28322f64.tar.bz2 linux-4fbfbdb5726ff15bdce1c371efa1281b28322f64.zip | |
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>
| -rw-r--r-- | drivers/usb/serial/generic.c | 9 | ||||
| -rw-r--r-- | include/linux/usb/serial.h | 9 |
2 files changed, 11 insertions, 7 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index c5b35252c931..a9b6d103aaf6 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -571,7 +571,7 @@ int usb_serial_generic_get_icount(struct tty_struct *tty, } EXPORT_SYMBOL_GPL(usb_serial_generic_get_icount); -#ifdef CONFIG_MAGIC_SYSRQ +#if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) { if (port->sysrq) { @@ -584,13 +584,8 @@ int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) } return 0; } -#else -int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) -{ - return 0; -} -#endif EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char); +#endif int usb_serial_handle_break(struct usb_serial_port *port) { diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 14cac4a1ae8f..be73646706a9 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -365,8 +365,17 @@ extern int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port, extern void usb_serial_generic_process_read_urb(struct urb *urb); extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size); + +#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); +#else +static inline int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch) +{ + 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, |