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If we get a simultaneous FS + FE interrupt for the same frame, it cannot be marked as completed and returned to userland as the framebuffer will be refilled by Unicam on the next sensor frame. Additionally, the timestamp will be set to 0 as the FS interrupt handling code will not have run yet. To avoid these problems, the frame is considered dropped in the FE handler, and will be returned to userland on the subsequent sensor frame. Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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.