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86686b8f7a
Notice that devices can be moved to dpm_prepared_list before running their resume callbacks, in analogy with dpm_noirq_resume_devices() and dpm_resume_early(), because doing so will not affect the final ordering of that list. Namely, if a device is the first dpm_suspended_list entry while dpm_list_mtx is held, it has not been removed so far and it cannot be removed until dpm_list_mtx is released, so moving it to dpm_prepared_list at that point is valid. If it is removed later, while its resume callback is running, it will be deleted from dpm_prepared_list without changing the ordering of the other devices in that list. Accordingly, rearrange the while () loop in dpm_resume() to move devices to dpm_prepared_list before running their resume callbacks and implify the locking and device reference counting in it. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.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.