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Filename Latest commit message Latest commit date
Kai-Heng Feng e650a264df xhci: Ensure link state is U3 after setting USB_SS_PORT_LS_U3
[ Upstream commit eb002726fac7cefb98ff39ddb89e150a1c24fe85 ]

The xHCI spec doesn't specify the upper bound of U3 transition time. For
some devices 20ms is not enough, so we need to make sure the link state
is in U3 before further actions.

I've tried to use U3 Entry Capability by setting U3 Entry Enable in
config register, however the port change event for U3 transition
interrupts the system suspend process.

For now let's use the less ideal method by polling PLS.

[use usleep_range(), and shorten the delay time while polling -Mathias]
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200312144517.1593-7-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-29 16:33:03 +02:00
arch powerpc/pseries: Fix MCE handling on pseries 2020-04-29 16:33:01 +02:00
block block, bfq: invoke flush_idle_tree after reparent_active_queues in pd_offline 2020-04-23 10:36:26 +02:00
certs
crypto crypto: rng - Fix a refcounting bug in crypto_rng_reset() 2020-04-17 10:50:16 +02:00
Documentation arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419 2020-04-29 16:32:56 +02:00
drivers xhci: Ensure link state is U3 after setting USB_SS_PORT_LS_U3 2020-04-29 16:33:03 +02:00
fs ceph: don't skip updating wanted caps when cap is stale 2020-04-29 16:32:58 +02:00
include KEYS: Don't write out to userspace while holding key semaphore 2020-04-23 10:36:45 +02:00
init kbuild: remove header compile test 2020-03-05 16:43:47 +01:00
ipc ipc/util.c: sysvipc_find_ipc() should increase position index 2020-04-29 16:33:00 +02:00
kernel perf/core: Disable page faults when getting phys address 2020-04-29 16:33:02 +02:00
lib lib/raid6/test: fix build on distros whose /bin/sh is not bash 2020-04-29 16:33:00 +02:00
LICENSES
mm mm, memcg: do not high throttle allocators based on wraparound 2020-04-17 10:50:17 +02:00
net net, ip_tunnel: fix interface lookup with no key 2020-04-29 16:32:55 +02:00
samples
scripts kconfig: qconf: Fix a few alignment issues 2020-04-29 16:33:00 +02:00
security KEYS: Don't write out to userspace while holding key semaphore 2020-04-23 10:36:45 +02:00
sound ALSA: usb-audio: Add Pioneer DJ DJM-250MK2 quirk 2020-04-29 16:33:03 +02:00
tools selftests: kmod: fix handling test numbers above 9 2020-04-29 16:33:00 +02:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: Check for a bad hva before dropping into the ghc slow path 2020-03-05 16:43:48 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.35 2020-04-23 10:36:46 +02:00
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.