Re: [rdma-next 08/22] RDMA/core: Delete BUG() from unreachable flow

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On Sun, Aug 13, 2017 at 01:29:04PM +0300, Leon Romanovsky wrote:
> On Sun, Aug 13, 2017 at 01:21:17PM +0300, Yuval Shaia wrote:
> > On Fri, Aug 11, 2017 at 01:49:49PM +0300, Leon Romanovsky wrote:
> > > From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> > >
> > > Remove call to BUG() in case wrong node_type was provided.
> > > This flow is unreachable, because node_types are supplied
> > > from specific enum.
> > >
> > > Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> > > Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
> > > ---
> > >  drivers/infiniband/core/verbs.c | 14 +++++---------
> > >  1 file changed, 5 insertions(+), 9 deletions(-)
> > >
> > > diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
> > > index 21fef6b6d4f3..0d359a482b13 100644
> > > --- a/drivers/infiniband/core/verbs.c
> > > +++ b/drivers/infiniband/core/verbs.c
> > > @@ -180,17 +180,13 @@ EXPORT_SYMBOL(ib_rate_to_mbps);
> > >  __attribute_const__ enum rdma_transport_type
> > >  rdma_node_get_transport(enum rdma_node_type node_type)
> > >  {
> > > -	switch (node_type) {
> > > -	case RDMA_NODE_IB_CA:
> > > +	if (node_type == RDMA_NODE_IB_CA)
> > >  		return RDMA_TRANSPORT_IB;
> > > -	case RDMA_NODE_RNIC:
> > > +
> > > +	if (node_type == RDMA_NODE_RNIC)
> > >  		return RDMA_TRANSPORT_IWARP;
> >
> > Looking at for-next, there is case for RDMA_NODE_USNIC.
> > Which branch this patch is based on?
> 
> for-next, in case of RDMA_NODE_USNIC, we are using the
> RDMA_TRANSPORT_USNIC_UDP return type.

I see, but then i would expect to see these lines in the patch:
-	case RDMA_NODE_USNIC:
-		return RDMA_TRANSPORT_USNIC;

> 
> >
> > > -	case RDMA_NODE_USNIC_UDP:
> > > -		return RDMA_TRANSPORT_USNIC_UDP;
> > > -	default:
> > > -		BUG();
> > > -		return 0;
> > > -	}
> > > +
> > > +	return RDMA_TRANSPORT_USNIC_UDP;
> > >  }
> > >  EXPORT_SYMBOL(rdma_node_get_transport);
> > >
> > > --
> > > 2.14.0
> > >
> > > --
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