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5f96ba5655
On some devices with a X-Powers AXP288 PMIC the LPAT tables in the ACPI node for the AXP288 PMIC for some reason only describe a small temperature range, e.g. 27° - 37° Celcius (assuming the entries are in millidegrees). When the tablet is idle in a room at 21° degrees this is causing values outside the LPAT table to be read, causing e.g. the following 2 errors to get spammed to the logs every 4 seconds! : [ 7512.791316] ACPI Error: AE_ERROR, Returned by Handler for [UserDefinedRegion] (20210930/evregion-281) [ 7512.791611] ACPI Error: Aborting method \_SB.SXP1._TMP due to previous error (AE_ERROR) (20210930/psparse-529) Fix this by clamping the raw value to the LPAT table range before passing it to acpi_lpat_raw_to_temp(). Note clamping has been chosen rather then extrapolating because it is unknown how other parts of the ACPI tables will respond to temperature values outside of the LPAT range. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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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.