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commitf384497a76upstream. Runtime PM should only be enabled in device_resume_early() if it has been disabled for the given device by device_suspend_late(). Otherwise, it may cause runtime PM callbacks to run prematurely in some cases which leads to further functional issues. Make two changes to address this problem. First, reorder device_suspend_late() to only disable runtime PM for a device when it is going to look for the device's callback or if the device is a "syscore" one. In all of the other cases, disabling runtime PM for the device is not in fact necessary. However, if the device's callback returns an error and the power.is_late_suspended flag is not going to be set, enable runtime PM so it only remains disabled when power.is_late_suspended is set. Second, make device_resume_early() only enable runtime PM for the devices with the power.is_late_suspended flag set. Fixes:443046d1ad("PM: sleep: Make suspend of devices more asynchronous") Reported-by: Rose Wu <ya-jou.wu@mediatek.com> Closes: https://lore.kernel.org/linux-pm/70b25dca6f8c2756d78f076f4a7dee7edaaffc33.camel@mediatek.com/ Cc: 6.16+ <stable@vger.kernel.org> # 6.16+ Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/12784270.O9o76ZdvQC@rafael.j.wysocki Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 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.