[Intel-gfx] [dinq] Request to merge in padovan's fence fd fix

[Chad Versace]

Chris just pushed execbuffer fence fds to dinq. Could someone please get the
below fix from airlied/drm-fixes into dinq? (What's the usual method here?
Merge drm-fixes -> dinq, cherry-pick drm-fixes -> dinq, rebase?)

Thanks

    commit 7e9081c5aac73b8a0bc22e0b3e7a12c3e9cf5256                                                                      
    Author: Gustavo Padovan <gustavo.padovan at collabora.com>                                                              
    Date:   Fri Jan 13 12:22:09 2017 -0200                                                                               
                                                                                                                         
        drm/fence: fix memory overwrite when setting out_fence fd                                                        
                                                                                                                         
        Currently if the userspace declares a int variable to store the out_fence                                        
        fd and pass it to OUT_FENCE_PTR the kernel will overwrite the 32 bits                                            
        above the int variable on 64 bits systems.                                                                       
                                                                                                                         
        Fix this by making the internal storage of out_fence in the kernel a s32                                         
        pointer.                                                                                                         
                                                                                                                         
        Reported-by: Chad Versace <chadversary at chromium.org>                                                             
        Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.com>                                                   
        Fixes: beaf5af48034 ("drm/fence: add out-fences support")                                                        
        Cc: Daniel Vetter <daniel at ffwll.ch>                                                                              
        Cc: Rafael Antognolli <rafael.antognolli at intel.com>                                                              
        Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>                                                         
        Acked-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>                                                   
        Reviewed-and-Tested-by: Chad Versace <chadversary at chromium.org>                                                  
        Link: http://patchwork.freedesktop.org/patch/msgid/1484317329-9293-1-git-send-email-gustavo@padovan.org