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Filename Latest commit message Latest commit date
Sherry Sun 325608ab60 tty: serial: fsl_lpuart: skip waiting for transmission complete when UARTCTRL_SBK is asserted
commit 2411fd94ceaa6e11326e95d6ebf876cbfed28d23 upstream.

According to LPUART RM, Transmission Complete Flag becomes 0 if queuing
a break character by writing 1 to CTRL[SBK], so here need to skip
waiting for transmission complete when UARTCTRL_SBK is asserted,
otherwise the kernel may stuck here.
And actually set_termios() adds transmission completion waiting to avoid
data loss or data breakage when changing the baud rate, but we don't
need to worry about this when queuing break characters.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20230223093941.31790-1-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-22 13:28:08 +01:00
arch UML: define RUNTIME_DISCARD_EXIT 2023-03-17 08:32:54 +01:00
block
certs
crypto
Documentation docs: Correct missing "d_" prefix for dentry_operations member d_weak_revalidate 2023-03-22 13:28:03 +01:00
drivers tty: serial: fsl_lpuart: skip waiting for transmission complete when UARTCTRL_SBK is asserted 2023-03-22 13:28:08 +01:00
fs ext4: fix possible double unlock when moving a directory 2023-03-22 13:28:08 +01:00
include sh: intc: Avoid spurious sizeof-pointer-div warning 2023-03-22 13:28:08 +01:00
init
ipc
kernel
lib
LICENSES
mm
net net/iucv: Fix size of interrupt data 2023-03-22 13:28:06 +01:00
samples
scripts
security
sound ALSA: hda: Match only Intel devices with CONTROLLER_IN_GPU() 2023-03-22 13:28:04 +01:00
tools
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
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Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.237 2023-03-17 08:32:54 +01:00
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.