Date: Tue, 14 Apr 2015 12:21:37 -0600
From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: "Hefty, Sean" <sean.hefty@intel.com>
Cc: "Weiny, Ira" <ira.weiny@intel.com>,
        Michael Wang <yun.wang@profitbricks.com>,
        Roland Dreier <roland@kernel.org>,
        Hal Rosenstock <hal.rosenstock@gmail.com>,
        "linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Tom Tucker <tom@opengridcomputing.com>,
        Steve Wise <swise@opengridcomputing.com>,
        Hoang-Nam Nguyen <hnguyen@de.ibm.com>,
        Christoph Raisch <raisch@de.ibm.com>,
        infinipath <infinipath@intel.com>, Eli Cohen <eli@mellanox.com>,
        "Latif, Faisal" <faisal.latif@intel.com>,
        Jack Morgenstein <jackm@dev.mellanox.co.il>,
        Or Gerlitz <ogerlitz@mellanox.com>, Haggai Eran <haggaie@mellanox.com>,
        Tom Talpey <tom@talpey.com>, Doug Ledford <dledford@redhat.com>
Subject: Re: [PATCH v3 07/28] IB/Verbs: Reform IB-ulp ipoib
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On Tue, Apr 14, 2015 at 06:02:47PM +0000, Hefty, Sean wrote:
> > Yes, that is the only reasonable thing that could happen.
> > 
> > init failure should only be possible under exceptional cases (OOM).
> > 
> > The only system response is to call ib_umad_add_one again - so of
> > course the first call had to completely clean up everything it did.
> 
> A reasonable follow up change would be to replace the add device
> callbacks with add port callbacks.

Yes, combined with a port argument to ib_set_client_data /
ib_get_client_data it would be a nice simplifying clean up.

It would be nice to have sane error handling too :( In an ideal world
the add call back should return an error and the thing that triggered
it should unwind back to module load failure.

Jason
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