diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250.h | 5 | ||||
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 6 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h index cfe6ba286b45..58e64c4e1e3a 100644 --- a/drivers/tty/serial/8250/8250.h +++ b/drivers/tty/serial/8250/8250.h @@ -186,6 +186,11 @@ static unsigned int __maybe_unused serial_icr_read(struct uart_8250_port *up, void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p); +void serial8250_rpm_get(struct uart_8250_port *p); +void serial8250_rpm_put(struct uart_8250_port *p); +DEFINE_GUARD(serial8250_rpm, struct uart_8250_port *, + serial8250_rpm_get(_T), serial8250_rpm_put(_T)); + static inline u32 serial_dl_read(struct uart_8250_port *up) { return up->dl_read(up); diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 2da9db960d09..5afae4025696 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -508,20 +508,22 @@ void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p) } EXPORT_SYMBOL_GPL(serial8250_clear_and_reinit_fifos); -static void serial8250_rpm_get(struct uart_8250_port *p) +void serial8250_rpm_get(struct uart_8250_port *p) { if (!(p->capabilities & UART_CAP_RPM)) return; pm_runtime_get_sync(p->port.dev); } +EXPORT_SYMBOL_GPL(serial8250_rpm_get); -static void serial8250_rpm_put(struct uart_8250_port *p) +void serial8250_rpm_put(struct uart_8250_port *p) { if (!(p->capabilities & UART_CAP_RPM)) return; pm_runtime_mark_last_busy(p->port.dev); pm_runtime_put_autosuspend(p->port.dev); } +EXPORT_SYMBOL_GPL(serial8250_rpm_put); /** * serial8250_em485_init() - put uart_8250_port into rs485 emulating |