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When we annotate the loop delay code with SYM_TYPED_FUNC_START() a function prototype signature will be emitted into the object file above each site called from C, and the delay loop code is using "fallthroughs" from the different assembly callbacks. This will not work as the execution flow will run into the prototype signatures. Rewrite the code to use explicit branches to the other code segments and annotate the code using SYM_TYPED_FUNC_START(). Tested on the ARM Versatile which uses the calibrated loop delay. Tested-by: Kees Cook <keescook@chromium.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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.