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Filename Latest commit message Latest commit date
Srinivas Pandruvada 768e8cdf93 thermal: intel: int340x: Protect trip temperature from concurrent updates
commit 6757a7abe47bcb12cb2d45661067e182424b0ee3 upstream.

Trip temperatures are read using ACPI methods and stored in the memory
during zone initializtion and when the firmware sends a notification for
change. This trip temperature is returned when the thermal core calls via
callback get_trip_temp().

But it is possible that while updating the memory copy of the trips when
the firmware sends a notification for change, thermal core is reading the
trip temperature via the callback get_trip_temp(). This may return invalid
trip temperature.

To address this add a mutex to protect the invalid temperature reads in
the callback get_trip_temp() and int340x_thermal_read_trips().

Fixes: 5fbf7f27fa ("Thermal/int340x: Add common thermal zone handler")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: 5.0+ <stable@vger.kernel.org> # 5.0+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-02-06 07:52:44 +01:00
arch KVM: x86/vmx: Do not skip segment attributes if unusable bit is set 2023-02-06 07:52:44 +01:00
block
certs
crypto
Documentation
drivers thermal: intel: int340x: Protect trip temperature from concurrent updates 2023-02-06 07:52:44 +01:00
fs cifs: Fix oops due to uncleared server->smbd_conn in reconnect 2023-02-06 07:52:44 +01:00
include
init
ipc
kernel trace_events_hist: add check for return value of 'create_hist_field' 2023-02-06 07:52:44 +01:00
lib lockref: stop doing cpu_relax in the cmpxchg loop 2023-02-06 07:52:42 +01:00
LICENSES
mm
net Bluetooth: hci_sync: cancel cmd_timer if hci_open failed 2023-02-06 07:52:43 +01:00
samples
scripts ftrace/scripts: Update the instructions for ftrace-bisect.sh 2023-02-06 07:52:44 +01:00
security
sound
tools Revert "selftests/bpf: check null propagation only neither reg is PTR_TO_BTF_ID" 2023-02-06 07:52:43 +01:00
usr
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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.