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Linus Walleij 3131d970f0 ARM: ux500: resume the second core properly 
The pen hold/release scheme was copied over to Ux500 from the ARM
reference designs like most of these at the time. It is not needed
at all, and was mostly removed in commit c00def71ef
"ARM: ux500: simplify secondary CPU boot".

However on the suspend/resume path and hot plug/unplug of CPUs,
the .cpu_die() callback was still waiting for the pen to be
released which made it spin forever and the second core never come
back online after suspend/resume.

Fix this by simply replacing the strange custom .cpu_die() with
a oneline wfi() just like e.g. the qcom platform does. This fixes
the issue and makes the second core come up properly after
suspend/resume.

As a side effect, this rids us of the completely surplus local
setup.h and hotplug.c files, and we just compile this into platsmp.c
with everything else SMP.

Cc: stable@vger.kernel.org
Fixes: c00def71ef ("ARM: ux500: simplify secondary CPU boot")
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2017-03-02 17:53:17 +01:00
arch ARM: ux500: resume the second core properly 2017-03-02 17:53:17 +01:00
block block: use for_each_thread() in sys_ioprio_set()/sys_ioprio_get() 2017-02-22 16:41:27 -08:00
certs certs: Add a secondary system keyring that can be added to dynamically 2016-04-11 22:48:09 +01:00
crypto crypto: xts - Add ECB dependency 2017-02-23 20:11:06 +08:00
Documentation Merge branch 'next/late' with mainline 2017-03-02 17:52:44 +01:00
drivers Merge branch 'next/late' with mainline 2017-03-02 17:52:44 +01:00
firmware WHENCE: use https://linuxtv.org for LinuxTV URLs 2015-12-04 10:35:11 -02:00
fs This is an addendum for the 4.11 merge window. 2017-02-23 09:36:04 -08:00
include Merge branch 'next/late' with mainline 2017-03-02 17:52:44 +01:00
init Merge branch 'akpm' (patches from Andrew) 2017-02-22 19:29:24 -08:00
ipc ipc/sem.c: fix incorrect sem_lock pairing 2017-01-10 18:31:55 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-02-23 11:36:06 -08:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-02-23 11:36:06 -08:00
mm mm/z3fold.c: limit first_num to the actual range of possible buddy indexes 2017-02-22 16:41:31 -08:00
net bpf: Fix bpf_xdp_event_output 2017-02-23 13:53:42 -05:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-02-22 10:15:09 -08:00
scripts Merge branch 'akpm' (patches from Andrew) 2017-02-22 19:29:24 -08:00
security driver core patches for 4.11-rc1 2017-02-22 11:44:32 -08:00
sound ALSA: usb-audio: Tidy up mixer_us16x08.c 2017-02-22 15:07:20 +01:00
tools This is the bulk of GPIO changes for the v4.11 cycle 2017-02-23 08:46:04 -08:00
usr kbuild: initramfs cleanup, set target from Kconfig 2017-01-05 09:40:16 -08:00
virt KVM: Return an error code only as a constant in kvm_get_dirty_log() 2017-02-17 12:30:14 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-08-02 16:48:52 -04:00
.mailmap mailmap: add codeaurora.org names for nameless email commits 2017-01-10 18:31:55 -08:00
COPYING
CREDITS MAINTAINERS: Remove old e-mail address 2017-02-13 12:24:56 -05:00
Kbuild scripts/gdb: provide linux constants 2016-05-23 17:04:14 -07:00
Kconfig
MAINTAINERS ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
Makefile A slightly quieter cycle for documentation this time around. 2017-02-22 18:51:29 -08:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

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.