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[ Upstream commit18dbfcdedc] Commit930914b7d5("powerpc/xive: Add a debugfs file to dump internal XIVE state") forgot to add a null check. Add it. Fixes:930914b7d5("powerpc/xive: Add a debugfs file to dump internal XIVE state") Signed-off-by: Ammar Faizi <ammarfaizi2@gmail.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211226135314.251221-1-ammar.faizi@intel.com Signed-off-by: Sasha Levin <sashal@kernel.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.