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drm/fb-helper: Remove mention of CONFIG_FB_DEFERRED_IO in docs
This was forgotten to fixup in the latest version of the deferred_io patch which made FB_DEFERRED_IO mandatory. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1462982962-10530-2-git-send-email-noralf@tronnes.org
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@ -85,14 +85,14 @@ static LIST_HEAD(kernel_fb_helper_list);
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* should call drm_fb_helper_single_add_all_connectors() followed by
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* drm_fb_helper_initial_config().
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*
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* If CONFIG_FB_DEFERRED_IO is enabled and &drm_framebuffer_funcs ->dirty is
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* set, the drm_fb_helper_{cfb,sys}_{write,fillrect,copyarea,imageblit}
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* functions will accumulate changes and schedule &fb_helper .dirty_work to run
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* right away. This worker then calls the dirty() function ensuring that it
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* will always run in process context since the fb_*() function could be
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* running in atomic context. If drm_fb_helper_deferred_io() is used as the
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* deferred_io callback it will also schedule dirty_work with the damage
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* collected from the mmap page writes.
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* If &drm_framebuffer_funcs ->dirty is set, the
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* drm_fb_helper_{cfb,sys}_{write,fillrect,copyarea,imageblit} functions will
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* accumulate changes and schedule &drm_fb_helper ->dirty_work to run right
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* away. This worker then calls the dirty() function ensuring that it will
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* always run in process context since the fb_*() function could be running in
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* atomic context. If drm_fb_helper_deferred_io() is used as the deferred_io
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* callback it will also schedule dirty_work with the damage collected from the
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* mmap page writes.
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*/
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/**
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