mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-02-15 04:42:02 +00:00
28 lines
943 B
Diff
28 lines
943 B
Diff
From 631ee829489df94f0ebc1c9436846c9c2de52110 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Tue, 6 Nov 2018 12:57:48 +0000
|
|
Subject: [PATCH 151/726] sc16is7xx: Don't spin if no data received
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/2676
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/tty/serial/sc16is7xx.c | 2 ++
|
|
1 file changed, 2 insertions(+)
|
|
|
|
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
|
|
index 93cf5f788817..6864adaaba7d 100644
|
|
--- a/drivers/tty/serial/sc16is7xx.c
|
|
+++ b/drivers/tty/serial/sc16is7xx.c
|
|
@@ -772,6 +772,8 @@ static bool sc16is7xx_port_irq(struct sc16is7xx_port *s, int portno)
|
|
rxlen = sc16is7xx_port_read(port, SC16IS7XX_RXLVL_REG);
|
|
if (rxlen)
|
|
sc16is7xx_handle_rx(port, rxlen, iir);
|
|
+ else
|
|
+ return false;
|
|
break;
|
|
/* CTSRTS interrupt comes only when CTS goes inactive */
|
|
case SC16IS7XX_IIR_CTSRTS_SRC:
|
|
--
|
|
2.33.1
|
|
|