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Some cache_hwmon devices can have interrupts firing at any time. The interrupt handler would stop devfreq monitor, update its vote and restart the monitor again. This introduces a race if devfreq_supend/resume() or devfreq_interval_update() is called at the same time. Since devfreq_monitor_start() re-initializes the work, it could cause corruption while the work is being used elsewhere. Protect governor monitor start/stops with a new lock. Change-Id: I143aaaea86494b4c617df46e2c521a19b43861d5 Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.