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

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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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2016-11-14 12:26:51 +02:00 committed by Greg Kroah-Hartman
parent af6f9d6883
commit 7d4e00c625
2 changed files with 9 additions and 2 deletions
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5
drivers/tty/serial/8250/8250.h
View File

@ -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);

6
drivers/tty/serial/8250/8250_port.c
View File

@ -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