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Calling acpi_dispatch_gpe() from acpi_ec_dispatch_gpe() is generally problematic, because it may cause the spurious interrupt handling in advance_transaction() to trigger in theory. However, instead of calling acpi_dispatch_gpe() to dispatch the EC GPE, acpi_ec_dispatch_gpe() can call advance_transaction() directly on first_ec and it can pass 'false' as its second argument to indicate calling it from process context. Moreover, if advance_transaction() is modified to return a bool value indicating whether or not the EC work needs to be flushed, it can be used to avoid unnecessary EC work flushing in acpi_ec_dispatch_gpe(), so change the code accordingly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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.