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Bartosz Golaszewski
19cfcafd7f
i2c_davinci_cpufreq_transition() is implemented in a way that will block if it ever gets called while no transfer is in progress. Not only that, but reinit_completion() is never called for xfr_complete. Use the fact that cpufreq uses an srcu_notifier (running in process context) for transitions and that the bus_lock is taken during the call to master_xfer() and simplify the code by removing the transfer completion entirely and protecting i2c_davinci_cpufreq_transition() with i2c_lock/unlock_adapter(). Reported-by: David Lechner <david@lechnology.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Sekhar Nori <nsekhar@ti.com> Tested-by: David Lechner <david@lechnology.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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.