openwrt/target/linux/bcm27xx/patches-5.10/950-0031-amba_pl011-Don-t-use-DT-aliases-for-numbering.patch
Rui Salvaterra 1343acc8cd kernel: bump 5.10 to 5.10.94
Deleted (upstreamed):
bcm27xx/patches-5.10/950-0669-drm-vc4-hdmi-Make-sure-the-device-is-powered-with-CE.patch [1]
bcm27xx/patches-5.10/950-0672-drm-vc4-hdmi-Move-initial-register-read-after-pm_run.patch [1]
gemini/patches-5.10/0003-ARM-dts-gemini-NAS4220-B-fis-index-block-with-128-Ki.patch [2]

Manually rebased:
bcm27xx/patches-5.10/950-0675-drm-vc4-hdmi-Drop-devm-interrupt-handler-for-CEC-int.patch

Manually reverted:
generic/pending-5.10/860-Revert-ASoC-mediatek-Check-for-error-clk-pointer.patch [3]

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.94&id=55b10b88ac8654fc2f31518aa349a2e643b37f18
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.94&id=958a8819d41420d7a74ed922a09cacc0ba3a4218
[3] https://lore.kernel.org/all/trinity-2a727d96-0335-4d03-8f30-e22a0e10112d-1643363480085@3c-app-gmx-bap33/

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2022-02-01 23:34:07 +00:00

30 lines
1.1 KiB
Diff

From a79b4327445a827be28b9939592da8e812a19b29 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 23 Feb 2016 17:26:48 +0000
Subject: [PATCH] amba_pl011: Don't use DT aliases for numbering
The pl011 driver looks for DT aliases of the form "serial<n>",
and if found uses <n> as the device ID. This can cause
/dev/ttyAMA0 to become /dev/ttyAMA1, which is confusing if the
other serial port is provided by the 8250 driver which doesn't
use the same logic.
---
drivers/tty/serial/amba-pl011.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2578,7 +2578,12 @@ static int pl011_setup_port(struct devic
if (IS_ERR(base))
return PTR_ERR(base);
+ /* Don't use DT serial<n> aliases - it causes the device to
+ be renumbered to ttyAMA1 if it is the second serial port in the
+ system, even though the other one is ttyS0. The 8250 driver
+ doesn't use this logic, so always remains ttyS0.
index = pl011_probe_dt_alias(index, dev);
+ */
uap->old_cr = 0;
uap->port.dev = dev;