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b5252a6cbb
Alan Stern points out that the WARN_ON() check in device_prepare() is racy (because the PM-runtime API can be disabled briefly for any device at any time and system suspend can start at any time too) and the pm_runtime_suspended() check in the computation of the direct_complete flag value is redundant (because it will be repeated later anyway). Drop both these checks accordingly. Reported-by: Alan Stern <stern@rowland.harvard.edu> 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.