mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
24 lines
747 B
Diff
24 lines
747 B
Diff
|
From c625bcbb6a4c45e29c7c2c0dec24831025051032 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
||
|
|
Date: Tue, 6 Nov 2018 12:57:48 +0000
|
||
|
|
Subject: [PATCH] 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
|
||
|
|
@@ -696,6 +696,8 @@ 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);
|