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Commit 0772b6e5 authored Jul 29, 2009 by San Mehat Committed by Ruchi Kandoi Feb 03, 2015

serial_core: Add wake_peer uart operation



Add wake_peer which is called before starting UART TX. The idea here
is to provide a mechanism where we can wakeup our peer before sending
data.

Change-Id: I42e0779b635f64ca99184b45d5b028de80197491
Signed-off-by: San Mehat <san@google.com>

parent 1fb6edeb

drivers/tty/serial/serial_core.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -95,6 +95,9 @@ static void __uart_start(struct tty_struct *tty)
		struct uart_state *state = tty->driver_data;
		struct uart_port *port = state->uart_port;

		if (port->ops->wake_peer)
		port->ops->wake_peer(port);

		if (!uart_tx_stopped(port))
		port->ops->start_tx(port);
		}

include/linux/serial_core.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -66,6 +66,7 @@ struct uart_ops {
		void (set_ldisc)(struct uart_port , int new);
		void (pm)(struct uart_port , unsigned int state,
		unsigned int oldstate);
		void (wake_peer)(struct uart_port );

		/*
		* Return a string describing the type of the port