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Filename Latest commit message Latest commit date
Ji-Ze Hong (Peter Hong) 2712816c10 serial: 8250_fintek: Fix garbled text for console 
commit 6c33ff728812aa18792afffaf2c9873b898e7512 upstream.

Commit fab8a02b73 ("serial: 8250_fintek: Enable high speed mode on Fintek F81866")
introduced support to use high baudrate with Fintek SuperIO UARTs. It'll
change clocksources when the UART probed.

But when user add kernel parameter "console=ttyS0,115200 console=tty0" to make
the UART as console output, the console will output garbled text after the
following kernel message.

[    3.681188] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled

The issue is occurs in following step:
	probe_setup_port() -> fintek_8250_goto_highspeed()

It change clocksource from 115200 to 921600 with wrong time, it should change
clocksource in set_termios() not in probed. The following 3 patches are
implemented change clocksource in fintek_8250_set_termios().

Commit 58178914ae ("serial: 8250_fintek: UART dynamic clocksource on Fintek F81216H")
Commit 195638b6d4 ("serial: 8250_fintek: UART dynamic clocksource on Fintek F81866")
Commit 423d9118c624 ("serial: 8250_fintek: Add F81966 Support")

Due to the high baud rate had implemented above 3 patches and the patch
Commit fab8a02b73 ("serial: 8250_fintek: Enable high speed mode on Fintek F81866")
is bugged, So this patch will remove it.

Fixes: fab8a02b73 ("serial: 8250_fintek: Enable high speed mode on Fintek F81866")
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Link: https://lore.kernel.org/r/20211215075835.2072-1-hpeter+linux_kernel@gmail.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-29 12:23:33 +01:00
arch ARM: dts: imx6ull-pinfunc: Fix CSI_DATA07__ESAI_TX0 pad name 2021-12-22 09:29:39 +01:00
block block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) 2021-12-14 14:49:02 +01:00
certs
crypto
Documentation dt-bindings: net: Reintroduce PHY no lane swap binding 2021-12-14 14:49:03 +01:00
drivers serial: 8250_fintek: Fix garbled text for console 2021-12-29 12:23:33 +01:00
fs ovl: fix warning in ovl_create_real() 2021-12-22 09:29:40 +01:00
include net: sched: Fix suspicious RCU usage while accessing tcf_tunnel_info 2021-12-22 09:29:40 +01:00
init
ipc
kernel rcu: Mark accesses to rcu_state.n_force_qs 2021-12-22 09:29:40 +01:00
lib siphash: use _unaligned version by default 2021-12-08 09:01:12 +01:00
LICENSES
mm memblock: ensure there is no overflow in memblock_overlaps_region() 2021-12-17 10:12:24 +01:00
net Revert "xsk: Do not sleep in poll() when need_wakeup set" 2021-12-22 09:29:40 +01:00
samples
scripts recordmcount.pl: look for jgnop instruction as well as bcrl on s390 2021-12-22 09:29:35 +01:00
security selinux: fix race condition when computing ocontext SIDs 2021-12-17 10:12:24 +01:00
sound ASoC: qdsp6: q6routing: Fix return value from msm_routing_put_audio_mixer 2021-12-14 14:49:03 +01:00
tools selftest/net/forwarding: declare NETIFS p9 p10 2021-12-22 09:29:36 +01:00
usr
virt
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Makefile Linux 5.4.168 2021-12-22 09:29:41 +01:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.