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Russell King (Oracle)
202ad1aaca
Upon resume from system suspend, the PM runtime core issues the following warning: tegra-xudc 3550000.usb: Runtime PM usage count underflow! This is because tegra_xudc_resume() unconditionally calls schedule_work(&xudc->usb_role_sw_work) whether or not anything has changed, which causes tegra_xudc_device_mode_off() to be called even when we're already in that mode. Keep track of the current state of "device_mode", and only schedule this work if it has changed from the hardware state on resume. Signed-off-by: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/E1uhtkH-007KDZ-JT@rmk-PC.armlinux.org.uk 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.