Re: [announce] new tree: "fix all build warnings, on all configs"

[Roland Dreier]

 > diff --git a/drivers/net/mlx4/mcg.c b/drivers/net/mlx4/mcg.c
 > index c83f88c..d1230a8 100644
 > --- a/drivers/net/mlx4/mcg.c
 > +++ b/drivers/net/mlx4/mcg.c
 > @@ -215,7 +215,7 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
 >  
 >  	if (block_mcast_loopback)
 >  		mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
 > -						       (1 << MGM_BLCK_LB_BIT));
 > +						       (1U << MGM_BLCK_LB_BIT));

This is fixing a warning caused by a gcc bug
(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37261) which is fixed
upstream.  The change is rather inoffensive but on the other hand I'm
not sure what our policy for dealing with version-specific warning bugs
in gcc should be.

 - R.
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