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Filename Latest commit message Latest commit date
Konstantin Kharlamov 86968dfa4b PCI: Leave Apple Thunderbolt controllers on for s2idle or standby 
commit 4694ae373dc2114f9a82f6ae15737e65af0c6dea upstream.

On Macbook 2013, resuming from suspend-to-idle or standby resulted in the
external monitor no longer being detected, a stacktrace, and errors like
this in dmesg:

  pcieport 0000:06:00.0: can't change power state from D3hot to D0 (config space inaccessible)

The reason is that we know how to turn power to the Thunderbolt controller
*off* via the SXIO/SXFP/SXLF methods, but we don't know how to turn power
back on.  We have to rely on firmware to turn the power back on.

When going to the "suspend-to-idle" or "standby" system sleep states,
firmware is not involved either on the suspend side or the resume side, so
we can't use SXIO/SXFP/SXLF to turn the power off.

Skip SXIO/SXFP/SXLF when firmware isn't involved in suspend, e.g., when
we're going to the "suspend-to-idle" or "standby" system sleep states.

Fixes: 1df5172c5c ("PCI: Suspend/resume quirks for Apple thunderbolt")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=212767
Link: https://lore.kernel.org/r/20210520235501.917397-1-Hi-Angel@yandex.ru
Signed-off-by: Konstantin Kharlamov <Hi-Angel@yandex.ru>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-19 08:53:17 +02:00
arch MIPS: fix "mipsel-linux-ld: decompress.c:undefined reference to `memmove'" 2021-07-19 08:53:16 +02:00
block rq-qos: fix missed wake-ups in rq_qos_throttle try two 2021-07-19 08:53:16 +02:00
certs certs: Move load_system_certificate_list to a common function 2021-06-30 08:47:55 -04:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-14 16:53:13 +02:00
Documentation clocksource: Retry clock read if long delays detected 2021-07-14 16:53:18 +02:00
drivers PCI: Leave Apple Thunderbolt controllers on for s2idle or standby 2021-07-19 08:53:17 +02:00
fs ubifs: Fix races between xattr_{set|get} and listxattr operations 2021-07-19 08:53:16 +02:00
include rq-qos: fix missed wake-ups in rq_qos_throttle try two 2021-07-19 08:53:16 +02:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc
kernel tracing: Resize tgid_map to pid_max, not PID_MAX_DEFAULT 2021-07-19 08:53:17 +02:00
lib seq_buf: Fix overflow in seq_buf_putmem_hex() 2021-07-19 08:53:16 +02:00
LICENSES
mm mm/z3fold: fix potential memory leak in z3fold_destroy_pool() 2021-07-14 16:53:47 +02:00
net sctp: add size validation when walking chunks 2021-07-19 08:53:13 +02:00
samples samples/bpf: Fix the error return code of xdp_redirect's main() 2021-07-14 16:53:30 +02:00
scripts kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n' 2021-07-14 16:53:20 +02:00
security selinux: use __GFP_NOWARN with GFP_NOWAIT in the AVC 2021-07-19 08:53:10 +02:00
sound ASoC: tegra: Set driver_name=tegra for all machine drivers 2021-07-19 08:53:16 +02:00
tools perf bench: Fix 2 memory sanitizer warnings 2021-07-19 08:53:14 +02:00
usr
virt KVM: do not allow mapping valid but non-reference-counted pages 2021-06-30 08:47:50 -04:00
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Makefile Linux 5.4.132 2021-07-14 16:53:49 +02:00
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.