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a84c2a885b
Modify pm_runtime_block_if_disabled() to return true when runtime PM is disabled for the device, regardless of the power.last_status value. This effectively prevents "smart suspend" from being enabled for devices with runtime PM disabled in device_prepare(), even transiently, so update the related comment in that function accordingly. If a device has runtime PM disabled in device_prepare(), it is not actually known whether or not runtime PM will be enabled for that device going forward, so it is more appropriate to postpone the "smart suspend" optimization for the device in the given system suspend-resume cycle than to enable it and get confused going forward. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/13718674.uLZWGnKmhe@rjwysocki.net
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 reStructuredText 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.