32a3f5f6d7
Otherwise the gen6 w/a in the kernel won't kick in and the write will land nowhere. Inspired by a patch Ken pointed me at which had the same issue (but isn't yet merged and also for a gen7+ feature). An audit of the entire driver didn't reveal any other case than the one in in the write_reg helper used by the gen6 queryobj code. Acked-by: Kenneth Graunke <kenneth@whitecape.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Tested-by: Xinkai Chen <yeled.nova@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Cc: "9.2" <mesa-stable@lists.freedesktop.org>