9f6abfcd67
Make valid_state() check if the ->enter callback is present in suspend_ops (only PM_SUSPEND_TO_IDLE can be valid otherwise) and make sleep_state_supported() call valid_state() consistently to validate the states other than PM_SUSPEND_TO_IDLE. While at it, clean up the comment in valid_state(). No expected functional impact. 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.