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Miroslav Lichvar 4f2b302da4 ntp: Allow TAI-UTC offset to be set to zero 
[ Upstream commit fdc6bae940 ]

The ADJ_TAI adjtimex mode sets the TAI-UTC offset of the system clock.
It is typically set by NTP/PTP implementations and it is automatically
updated by the kernel on leap seconds. The initial value is zero (which
applications may interpret as unknown), but this value cannot be set by
adjtimex. This limitation seems to go back to the original "nanokernel"
implementation by David Mills.

Change the ADJ_TAI check to accept zero as a valid TAI-UTC offset in
order to allow setting it back to the initial value.

Fixes: 153b5d054a ("ntp: support for TAI")
Suggested-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Link: https://lkml.kernel.org/r/20190417084833.7401-1-mlichvar@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-06-15 11:54:53 +02:00
arch perf/x86/intel: Allow PEBS multi-entry in watermark mode 2019-06-15 11:54:52 +02:00
block block: sed-opal: fix IOC_OPAL_ENABLE_DISABLE_MBR 2019-05-31 06:47:29 -07:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: ccm - fix incompatibility between "ccm" and "ccm_base" 2019-05-21 18:50:20 +02:00
Documentation doc: Cope with Sphinx logging deprecations 2019-06-09 09:18:17 +02:00
drivers pwm: meson: Use the spin-lock only to protect register modifications 2019-06-15 11:54:53 +02:00
firmware
fs fs/fat/file.c: issue flush after the writeback of FAT 2019-06-15 11:54:51 +02:00
include ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled 2019-06-11 12:21:51 +02:00
init init: initialize jump labels before command line option parsing 2019-05-16 19:42:23 +02:00
ipc ipc: prevent lockup on alloc_msg and free_msg 2019-06-15 11:54:51 +02:00
kernel ntp: Allow TAI-UTC offset to be set to zero 2019-06-15 11:54:53 +02:00
lib test_firmware: Use correct snprintf() limit 2019-06-11 12:21:49 +02:00
mm mm/slab.c: fix an infinite loop in leaks_show() 2019-06-15 11:54:51 +02:00
net ethtool: check the return value of get_regs_len 2019-06-11 12:21:51 +02:00
samples samples: mei: use /dev/mei0 instead of /dev/mei 2019-02-15 08:09:12 +01:00
scripts fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-06-11 12:21:51 +02:00
security ima: show rules with IMA_INMASK correctly 2019-06-09 09:18:18 +02:00
sound ALSA: hda/realtek - Set default power save node to 0 2019-06-09 09:18:16 +02:00
tools objtool: Don't use ignore flag for fake jumps 2019-06-15 11:54:52 +02:00
usr
virt KVM: s390: Do not report unusabled IDs via KVM_CAP_MAX_VCPU_ID 2019-06-09 09:18:16 +02:00
.cocciconfig
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.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
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MAINTAINERS MAINTAINERS: Add Sasha as a stable branch maintainer 2018-12-01 09:42:50 +01:00
Makefile Linux 4.14.125 2019-06-11 12:21:51 +02:00
README

README 

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.