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Since we use a worker to enable FBC on the CRTC, it is possible for the CRTC to be switched off before we run. In this case, the CRTC will not allow us to wait upon a vblank, so remove the DRM_ERROR as this is very much expected. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102410 Fixes:ca18d51d77("drm/i915/fbc: wait for a vblank instead of 50ms when enabling") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170825150215.19236-1-chris@chris-wilson.co.uk Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> (cherry picked from commit908b6e6e8a) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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.