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commitfb033c95c9upstream. The system currently warns if the config conditions for building return_address in arch/arm/kernel/return_address.c are not met, leaving just an EXPORT_SYMBOL_GPL(return_address) of a function defined to be 'static linline'. This is a result ofaeea3592a1("ARM: 8158/1: LLVMLinux: use static inline in ARM ftrace.h"). Since we're not going to build anything other than an exported symbol for something that is already being defined to be an inline-able return of NULL, just avoid building the code to remove the following warning: Fixes:aeea3592a1("ARM: 8158/1: LLVMLinux: use static inline in ARM ftrace.h") Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.