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Not-entirely-upstream-sha1-but-equivalent:bed2dd8421("drm/ttm: Quick-test mmap offset in ttm_bo_mmap()") Setting CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT=n (added by commit:b30a43ac71) causes the build to fail with: ERROR: "drm_legacy_mmap" [drivers/gpu/drm/nouveau/nouveau.ko] undefined! This does not happend upstream as the offending code got removed in:bed2dd8421("drm/ttm: Quick-test mmap offset in ttm_bo_mmap()") Fix that by adding check for CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT around the drm_legacy_mmap() call. Also, as Sven Joachim pointed out, we need to make the check in CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT=n case return -EINVAL as its done for basically all other gpu drivers, especially in upstream kernels drivers/gpu/drm/ttm/ttm_bo_vm.c as of the upstream commitbed2dd8421. NOTE. This is a minimal stable-only fix for trees whereb30a43ac71is backported as the build error affects nouveau only. Fixes:b30a43ac71("drm/nouveau: add kconfig option to turn off nouveau legacy contexts. (v3)") Signed-off-by: Thomas Backlund <tmb@mageia.org> Cc: stable@vger.kernel.org Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sven Joachim <svenjoac@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.