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Filename Latest commit message Latest commit date
Punit Agrawal d6ac466168 serdev: Don't claim unsupported ACPI serial devices
commit c5ee0b3104e0b292d353e63fd31cb8c692645d8c upstream.

Serdev sub-system claims all ACPI serial devices that are not already
initialised. As a result, no device node is created for serial ports
on certain boards such as the Apollo Lake based UP2. This has the
unintended consequence of not being able to raise the login prompt via
serial connection.

Introduce a blacklist to reject ACPI serial devices that should not be
claimed by serdev sub-system. Add the peripheral ids for Intel HS UART
to the blacklist to bring back serial port on SoCs carrying them.

Cc: stable@vger.kernel.org
Signed-off-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Johan Hovold <johan@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191219100345.911093-1-punit1.agrawal@toshiba.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-14 20:08:32 +01:00
arch
block
certs
crypto
Documentation
drivers serdev: Don't claim unsupported ACPI serial devices 2020-01-14 20:08:32 +01:00
fs pstore/ram: Regularize prz label allocation lifetime 2020-01-14 20:08:28 +01:00
include can: can_dropped_invalid_skb(): ensure an initialized headroom in outgoing CAN sk_buffs 2020-01-14 20:08:28 +01:00
init
ipc
kernel tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined 2020-01-14 20:08:22 +01:00
lib
LICENSES
mm
net vlan: vlan_changelink() should propagate errors 2020-01-12 12:21:50 +01:00
samples
scripts
security
sound ALSA: hda/realtek - Add quirk for the bass speaker on Lenovo Yoga X1 7th gen 2020-01-14 20:08:20 +01:00
tools selftests: pmtu: fix init mtu value in description 2020-01-12 12:21:45 +01:00
usr
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Makefile Linux 5.4.11 2020-01-12 12:21:53 +01:00
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.