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When we are enabling a CRTC, drm_crtc_vblank_get() is called before drm_crtc_vblank_on(), which is not supposed to happen (hence the WARN_ON() in the code). To solve the problem, we delay the 'update display list' operation after the CRTC is actually enabled. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Eric Anholt <eric@anholt.net> Link: http://patchwork.freedesktop.org/patch/msgid/1498163126-26678-1-git-send-email-boris.brezillon@free-electrons.com Fixes: 34c8ea400ff6 ("drm/vc4: Mimic drm_atomic_helper_commit() behavior")
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.