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The evaluation of LPS0 _DSM Function 1 in lps0_device_attach() may be useless if pm_debug_messages_on is never set. For this reason, instead of evaluating it in lps0_device_attach(), do that in a new .begin() callback for s2idle, acpi_s2idle_begin_lps0(), only when pm_debug_messages_on is set at that point. However, never attempt to evaluate LPS0 _DSM Function 1 more than once to avoid recurring failures. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Link: https://patch.msgid.link/3027060.e9J7NaK4W3@rafael.j.wysocki
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 reStructuredText 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.