Merge tag 'drm-hisilicon-next-2018-09-26' of github.com:xin3liang/linux into drm...

- A crash fix founded in recent linux-next from John Garry
- One sparse warning fix from Souptick Joarder
- Some xxx_unref cleanup from Thomas Zimmermann

Signed-off-by: Dave Airlie <[email protected]>
From: Xinliang Liu <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/CAGd==04mXPMjVZ3=cM8r+DSQNM6zy7Anc4T2OsHjZgSsazBTPQ@mail.gmail.com