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The 'request' variable is a pointer to the 'request' field of the struct musb_request 'req' pointer. It only worked until now because the 'request' field is the first one in the musb_request structure, but as soon as that changes, the check will be invalid. Fix it preventively by doing the NULL-check on the 'req' pointer instead. Suggested-by: Maarten ter Huurne <maarten@treewalker.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20210123142502.16980-2-paul@crapouillou.net 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.