On 12/10/2012 01:34 PM, Rickard ANDERSSON wrote:
Add power management function to tty driver interface
and add implementation for serial core.
Signed-off-by: Rickard Andersson<rickard.andersson@xxxxxxxxxxxxxx>
---
drivers/tty/serial/serial_core.c | 10 ++++++++++
include/linux/tty_driver.h | 8 ++++++++
2 files changed, 18 insertions(+)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index b2fc8d7..3597dc8 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1114,6 +1114,15 @@ static int uart_get_icount(struct tty_struct *tty,
return 0;
}
+static int uart_pm(struct tty_struct *tty, enum tty_pm_state state)
+{
+ struct uart_state *ustate = tty->driver_data;
+
+ uart_change_pm(ustate, state);
I just realized that I should hold "port->mutex" while calling
uart_change_pm(..).
I am waiting for further comments on the patch set.
BR
Rickard
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