On Wed, Apr 20, 2016 at 06:05:30AM -0700, Dennis Dalessandro wrote:
> From: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> 
> The iowait_sdma_drained() callback lacked locking to
> protect the qp s_flags field.
> 
> This causes the s_flags to be out of sync
> on multiple CPUs, potentially corrupting the s_flags.
> 
> Fixes: a545f5308b6c ("staging/rdma/hfi: fix CQ completion order issue")
> Reviewed-by: Sebastian Sanchez <sebastian.sanchez-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> Signed-off-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

Reviewed-by: Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>