[PATCH] Altix: shut off xmit intr if done xmitting

Small mod to shut off the xmit interrupt if we have nothing to transmit.

Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/serial/sn_console.c b/drivers/serial/sn_console.c
index fee6418..840815f 100644 (file)
--- a/drivers/serial/sn_console.c
+++ b/drivers/serial/sn_console.c
@@ -572,6 +572,7 @@ static void sn_transmit_chars(struct sn_cons_port *port, int raw)
 
        if (uart_circ_empty(xmit) || uart_tx_stopped(&port->sc_port)) {
                /* Nothing to do. */
+               ia64_sn_console_intr_disable(SAL_CONSOLE_INTR_XMIT);
                return;
        }