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Dmitry Osipenko da007f171f kernel/reboot: Change registration order of legacy power-off handler
We're unconditionally registering sys-off handler for the legacy
pm_power_off() callback, this causes problem for platforms that don't
use power-off handlers at all and should be halted. Now reboot syscall
assumes that there is a power-off handler installed and tries to power
off system instead of halting it.

To fix the trouble, move the handler's registration to the reboot syscall
and check the pm_power_off() presence.

Fixes: 0e2110d2e9 ("kernel/reboot: Add kernel_can_power_off()")
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-05-25 14:51:40 +02:00
arch m68k: virt: Switch to new sys-off handler API 2022-05-25 14:39:32 +02:00
block for-5.19/drivers-2022-05-22 2022-05-23 14:04:14 -07:00
certs certs: Explain the rationale to call panic() 2022-05-23 18:47:49 +03:00
crypto certs: Factor out the blacklist hash creation 2022-05-23 18:47:49 +03:00
Documentation Power management updates for 5.19-rc1 2022-05-24 16:04:25 -07:00
drivers Merge back reboot/poweroff notifiers rework for 5.19-rc1. 2022-05-25 14:38:29 +02:00
fs integrity-v5.19 2022-05-24 13:50:39 -07:00
include Merge back reboot/poweroff notifiers rework for 5.19-rc1. 2022-05-25 14:38:29 +02:00
init random: handle latent entropy and command line from random_init() 2022-05-18 15:53:53 +02:00
ipc fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
kernel kernel/reboot: Change registration order of legacy power-off handler 2022-05-25 14:51:40 +02:00
lib hwmon updates for v5.19-rc1 2022-05-24 14:23:10 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm kernel-hardening updates for v5.19-rc1 2022-05-24 12:27:09 -07:00
net kernel-hardening updates for v5.19-rc1 2022-05-24 12:27:09 -07:00
samples Landlock updates for v5.19-rc1 2022-05-24 13:09:13 -07:00
scripts tpmdd updates for v5.19-rc1 2022-05-24 13:16:50 -07:00
security integrity-v5.19 2022-05-24 13:50:39 -07:00
sound xen: branch for v5.19-rc1 2022-05-23 20:49:45 -07:00
tools Power management updates for 5.19-rc1 2022-05-24 16:04:25 -07:00
usr Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
virt KVM: Free new dirty bitmap if creating a new memslot fails 2022-05-20 13:02:05 -04:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap Scheduler changes in this cycle were: 2022-05-24 11:11:13 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS for-linus-2022052401 2022-05-24 15:21:15 -07:00
Makefile kernel-hardening updates for v5.19-rc1 2022-05-24 12:27:09 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.