Commit 7d4e00c6 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
Browse files

serial: 8250_port: export serial8250_rpm_{get|put}_tx() 



The following fix of runtime PM use in DMA mode requires at least
serial8250_rpm_put_tx() to be available. Export both calls.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent af6f9d68

drivers/tty/serial/8250/8250.h

+5 −0
Original line number Diff line number Diff line
@@ -129,8 +129,13 @@ static inline void serial_dl_write(struct uart_8250_port *up, int value) 
}



struct uart_8250_port *serial8250_get_port(int line);



void serial8250_rpm_get(struct uart_8250_port *p);

void serial8250_rpm_put(struct uart_8250_port *p);



void serial8250_rpm_get_tx(struct uart_8250_port *p);

void serial8250_rpm_put_tx(struct uart_8250_port *p);



int serial8250_em485_init(struct uart_8250_port *p);

void serial8250_em485_destroy(struct uart_8250_port *p);

drivers/tty/serial/8250/8250_port.c

+4 −2
Original line number Diff line number Diff line
@@ -636,7 +636,7 @@ EXPORT_SYMBOL_GPL(serial8250_em485_destroy); 
 * once and disable_runtime_pm_tx() will still disable RPM because the fifo is

 * empty and the HW can idle again.

 */

static void serial8250_rpm_get_tx(struct uart_8250_port *p)

void serial8250_rpm_get_tx(struct uart_8250_port *p)

{

	unsigned char rpm_active;
@@ -648,8 +648,9 @@ static void serial8250_rpm_get_tx(struct uart_8250_port *p) 
		return;

	pm_runtime_get_sync(p->port.dev);

}

EXPORT_SYMBOL_GPL(serial8250_rpm_get_tx);



static void serial8250_rpm_put_tx(struct uart_8250_port *p)

void serial8250_rpm_put_tx(struct uart_8250_port *p)

{

	unsigned char rpm_active;
@@ -662,6 +663,7 @@ static void serial8250_rpm_put_tx(struct uart_8250_port *p) 
	pm_runtime_mark_last_busy(p->port.dev);

	pm_runtime_put_autosuspend(p->port.dev);

}

EXPORT_SYMBOL_GPL(serial8250_rpm_put_tx);



/*

 * IER sleep support.  UARTs which have EFRs need the "extended

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