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If there is no mutex lock between run and active in aidl, closing the sensor when reporting an event will cause an address exception. After we added the mutex lock, we found that the reading process would be blocked probabilistically when waking up from deep sleep, and activating the sensor at this time would cause a deadlock. Adding a sync event fixed this issue. Type: Fix Redmine ID: 472806 Associated modifications: https://10.10.10.29/c/android/rk/hardware/rk29/sensor/+/232874 Test: Deep sleep test Signed-off-by: Bian Jin chen <kenjc.bian@rock-chips.com> Change-Id: I5275af261be189ef70a30a8b544fcbd0c356ff41
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.