[ Upstream commit dea796fcab0a219830831c070b8dc367d7e0f708 ] Currently, when removing the SCMI PM driver not all the resources registered with genpd subsystem are properly de-registered. As a side effect of this after a driver unload/load cycle you get a splat with a few warnings like this: | debugfs: Directory 'BIG_CPU0' with parent 'pm_genpd' already present! | debugfs: Directory 'BIG_CPU1' with parent 'pm_genpd' already present! | debugfs: Directory 'LITTLE_CPU0' with parent 'pm_genpd' already present! | debugfs: Directory 'LITTLE_CPU1' with parent 'pm_genpd' already present! | debugfs: Directory 'LITTLE_CPU2' with parent 'pm_genpd' already present! | debugfs: Directory 'LITTLE_CPU3' with parent 'pm_genpd' already present! | debugfs: Directory 'BIG_SSTOP' with parent 'pm_genpd' already present! | debugfs: Directory 'LITTLE_SSTOP' with parent 'pm_genpd' already present! | debugfs: Directory 'DBGSYS' with parent 'pm_genpd' already present! | debugfs: Directory 'GPUTOP' with parent 'pm_genpd' already present! Add a proper scmi_pm_domain_remove callback to the driver in order to take care of all the needed cleanups not handled by devres framework. Link: https://lore.kernel.org/r/20220817172731.1185305-7-cristian.marussi@arm.com Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.
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