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Commitd393acce7b("drm/tests: Switch to kunit devices") switched the DRM device creation helpers from an ad-hoc implementation to the new kunit device creation helpers introduced in commitd03c720e03("kunit: Add APIs for managing devices"). However, while the DRM helpers were using a platform_device, the kunit helpers are using a dedicated bus and device type. That situation creates small differences in the initialisation, and one of them is that the kunit devices do not have the DMA masks setup. In turn, this means that we can't do any kind of DMA buffer allocation anymore, which creates a regression on some (downstream for now) tests. Let's set up a default DMA mask that should work on any platform to fix it. Fixes:d03c720e03("kunit: Add APIs for managing devices") Signed-off-by: Maxime Ripard <mripard@kernel.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@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.