diff options
Diffstat (limited to 'drivers/tty/serial/serial_core.c')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 0db90be4c3bc..6a8963caf954 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -105,6 +105,7 @@ void uart_write_wakeup(struct uart_port *port) BUG_ON(!state); tty_port_tty_wakeup(&state->port); } +EXPORT_SYMBOL(uart_write_wakeup); static void uart_stop(struct tty_struct *tty) { @@ -316,8 +317,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state) state->xmit.buf = NULL; uart_port_unlock(uport, flags); - if (xmit_buf) - free_page((unsigned long)xmit_buf); + free_page((unsigned long)xmit_buf); } /** @@ -343,7 +343,6 @@ uart_update_timeout(struct uart_port *port, unsigned int cflag, */ port->timeout = (HZ * size) / baud + HZ/50; } - EXPORT_SYMBOL(uart_update_timeout); /** @@ -445,7 +444,6 @@ uart_get_baud_rate(struct uart_port *port, struct ktermios *termios, WARN_ON(1); return 0; } - EXPORT_SYMBOL(uart_get_baud_rate); /** @@ -470,7 +468,6 @@ uart_get_divisor(struct uart_port *port, unsigned int baud) return quot; } - EXPORT_SYMBOL(uart_get_divisor); /* Caller holds port mutex */ @@ -645,6 +642,20 @@ static void uart_flush_buffer(struct tty_struct *tty) } /* + * This function performs low-level write of high-priority XON/XOFF + * character and accounting for it. + * + * Requires uart_port to implement .serial_out(). + */ +void uart_xchar_out(struct uart_port *uport, int offset) +{ + serial_port_out(uport, offset, uport->x_char); + uport->icount.tx++; + uport->x_char = 0; +} +EXPORT_SYMBOL_GPL(uart_xchar_out); + +/* * This function is used to send a high-priority XON/XOFF character to * the device */ @@ -1571,8 +1582,7 @@ static void uart_tty_port_shutdown(struct tty_port *port) state->xmit.buf = NULL; spin_unlock_irq(&uport->lock); - if (buf) - free_page((unsigned long)buf); + free_page((unsigned long)buf); uart_change_pm(state, UART_PM_STATE_OFF); } @@ -1915,7 +1925,7 @@ static void uart_port_spin_lock_init(struct uart_port *port) */ void uart_console_write(struct uart_port *port, const char *s, unsigned int count, - void (*putchar)(struct uart_port *, int)) + void (*putchar)(struct uart_port *, unsigned char)) { unsigned int i; @@ -2207,6 +2217,7 @@ unlock: return 0; } +EXPORT_SYMBOL(uart_suspend_port); int uart_resume_port(struct uart_driver *drv, struct uart_port *uport) { @@ -2292,6 +2303,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport) return 0; } +EXPORT_SYMBOL(uart_resume_port); static inline void uart_report_port(struct uart_driver *drv, struct uart_port *port) @@ -2589,6 +2601,7 @@ out_kfree: out: return retval; } +EXPORT_SYMBOL(uart_register_driver); /** * uart_unregister_driver - remove a driver from the uart core layer @@ -2612,6 +2625,7 @@ void uart_unregister_driver(struct uart_driver *drv) drv->state = NULL; drv->tty_driver = NULL; } +EXPORT_SYMBOL(uart_unregister_driver); struct tty_driver *uart_console_device(struct console *co, int *index) { @@ -2946,6 +2960,7 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport) return ret; } +EXPORT_SYMBOL(uart_add_one_port); /** * uart_remove_one_port - detach a driver defined port structure @@ -3026,6 +3041,7 @@ out: return ret; } +EXPORT_SYMBOL(uart_remove_one_port); /* * Are the two ports equivalent? @@ -3202,14 +3218,6 @@ bool uart_try_toggle_sysrq(struct uart_port *port, unsigned int ch) EXPORT_SYMBOL_GPL(uart_try_toggle_sysrq); #endif -EXPORT_SYMBOL(uart_write_wakeup); -EXPORT_SYMBOL(uart_register_driver); -EXPORT_SYMBOL(uart_unregister_driver); -EXPORT_SYMBOL(uart_suspend_port); -EXPORT_SYMBOL(uart_resume_port); -EXPORT_SYMBOL(uart_add_one_port); -EXPORT_SYMBOL(uart_remove_one_port); - /** * uart_get_rs485_mode() - retrieve rs485 properties for given uart * @port: uart device's target port |