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f2cba54a7f
enable_irq_wake() can fail. Previously acpi_s2idle_prepare() silently ignored it's return code. Based on [1] we should try to continue even in case of an error, so just log a warning for now. Discovered when trying to go into s2idle under Xen. This leads to a system that can't be woken, since xen-pirq currently doesn't support setting wakeup IRQs [2]. With this you get at least some helpful log message if you have access to console messages. Link: https://lore.kernel.org/linux-acpi/20230313125344.2893-1-simon@invisiblethingslab.com/ # v1 Link: https://lore.kernel.org/linux-acpi/CAJZ5v0jahjt58nP6P5+xRdtD_ndYPvq4ecMVz6nfGu9tf5iaUw@mail.gmail.com/ # [1] Link: https://lore.kernel.org/xen-devel/20230313134102.3157-1-simon@invisiblethingslab.com/ # [2] Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com> [ rjw: Adjust white space ] 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.