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A static analyser was complaining about not checking for null pointers. However, the location of the complaint can only be reached in the first place if said pointer is non-null. Basically, if we are using a v69 GuC then the descriptor pool is guaranteed to be alocated at start of day or submission will be disabled with an ENOMEM error. And if we are using a later GuC that does not use a descriptor pool then the v69 submission function would not be called. So, not a possible null at that point in the code. Hence adding a GEM_BUG_ON(!ptr) to keep the tool happy. Signed-off-by: John Harrison <John.C.Harrison@Intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221221193031.687266-3-John.C.Harrison@Intel.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.