mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
4295485719
Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709) Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
24 lines
755 B
Diff
24 lines
755 B
Diff
From 6a47065f2c10f857ec32786d0c4f2e1c46aed98b Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Tue, 6 Nov 2018 12:57:48 +0000
|
|
Subject: [PATCH 149/703] 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(+)
|
|
|
|
--- a/drivers/tty/serial/sc16is7xx.c
|
|
+++ b/drivers/tty/serial/sc16is7xx.c
|
|
@@ -678,6 +678,8 @@ static bool sc16is7xx_port_irq(struct sc
|
|
rxlen = sc16is7xx_port_read(port, SC16IS7XX_RXLVL_REG);
|
|
if (rxlen)
|
|
sc16is7xx_handle_rx(port, rxlen, iir);
|
|
+ else
|
|
+ return false;
|
|
break;
|
|
case SC16IS7XX_IIR_THRI_SRC:
|
|
sc16is7xx_handle_tx(port);
|