openwrt/target/linux/bcm27xx/patches-5.15/950-0108-sc16is7xx-Don-t-spin-if-no-data-received.patch
John Audia 67d998e25d
kernel: bump 5.15 to 5.15.145
Changelog: https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.145

No patches needed a rebase.

 23.05 backport:

    Rebased patch mediatek/100-dts-update-mt7622-rfb1.patch due to
    changes introduced in commit e37aa926447f ("arm64: dts: mediatek:
    mt7622: fix memory node warning check") in version v5.15.143 and we
    jumped over from v5.15.139 directly to v5.15.145.

Build system: x86_64
Build-tested: ramips/tplink_archer-a6-v3
Run-tested: ramips/tplink_archer-a6-v3

 23.05 backport:

  Stijn:
   Compile-tested: ath79/generic, ipq40xx/generic, mvebu/cortexa72, ramips/mt{7621,7620,76x8}, realtek/rtl{838x,930x}, 86/64.
   Run-tested: cortexa72 (RB5009UG+S+IN), mt7621 (EAP615-Wall v1), rtl838x (GS1900-10HP, GS1900-8HP, GS108T v3).

  Petr:
   Compile-tested: ipq807x, mvebu/cortexa9
   Run-tested: turris-omnia, prpl-haze

Tested-by: Stijn Segers <foss@volatilesystems.org> [23.05 testing]
Signed-off-by: John Audia <therealgraysky@proton.me>
Signed-off-by: Petr Štetiar <ynezz@true.cz> [23.05 refresh]
(cherry picked from commit 8de4cc77a6)
2024-01-07 12:57:30 +00:00

24 lines
689 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
@@ -708,6 +708,8 @@ static bool sc16is7xx_port_irq(struct sc
if (rxlen)
sc16is7xx_handle_rx(port, rxlen, iir);
+ else
+ return false;
break;
case SC16IS7XX_IIR_THRI_SRC:
sc16is7xx_handle_tx(port);