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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-11-14 13:26:51 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-11-16 12:57:26 +0300
commit7d4e00c6253bc57b1ac0764ca76d4a8642354b54 (patch)
treeeb903f68aeb01ab56c69aa40a974d30ec689387e /drivers/tty
parentaf6f9d6883ac95d14271b4613e5813f2938dd4d4 (diff)
downloadlinux-7d4e00c6253bc57b1ac0764ca76d4a8642354b54.tar.xz
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: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250.h5
-rw-r--r--drivers/tty/serial/8250/8250_port.c6
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index a697a8585ddc..124e6e695a3a 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -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);
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 1731b98d2471..4a326034c51b 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -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