linux-kernel - Re: [PATCH 3/5] ib_srpt: depend on INFINIBAND_ADDR

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Date:   Tue, 1 May 2018 14:48:03 -0600
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Greg Thelen <gthelen@...gle.com>
Cc:     Doug Ledford <dledford@...hat.com>,
        Bart Van Assche <Bart.VanAssche@....com>,
        Christoph Hellwig <hch@....de>, linux-rdma@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Tarick Bedeir <tarick@...gle.com>
Subject: Re: [PATCH 3/5] ib_srpt: depend on INFINIBAND_ADDR_TRANS

On Tue, May 01, 2018 at 03:08:57AM +0000, Greg Thelen wrote:
> On Mon, Apr 30, 2018 at 4:35 PM Jason Gunthorpe <jgg@...pe.ca> wrote:
> 
> > On Wed, Apr 25, 2018 at 03:33:39PM -0700, Greg Thelen wrote:
> > > INFINIBAND_SRPT code depends on INFINIBAND_ADDR_TRANS provided symbols.
> > > So declare the kconfig dependency.  This is necessary to allow for
> > > enabling INFINIBAND without INFINIBAND_ADDR_TRANS.
> > >
> > > Signed-off-by: Greg Thelen <gthelen@...gle.com>
> > > Cc: Tarick Bedeir <tarick@...gle.com>
> > >  drivers/infiniband/ulp/srpt/Kconfig | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/infiniband/ulp/srpt/Kconfig
> b/drivers/infiniband/ulp/srpt/Kconfig
> > > index 31ee83d528d9..fb8b7182f05e 100644
> > > +++ b/drivers/infiniband/ulp/srpt/Kconfig
> > > @@ -1,6 +1,6 @@
> > >  config INFINIBAND_SRPT
> > >       tristate "InfiniBand SCSI RDMA Protocol target support"
> > > -     depends on INFINIBAND && TARGET_CORE
> > > +     depends on INFINIBAND && INFINIBAND_ADDR_TRANS && TARGET_CORE
> 
> > Isn't INFINIBAND && INFINIBAND_ADDR_TRANS a bit redundant? Can't have
> > INFINIBAND_ADDR_TRANS without INFINIBAND.
> 
> By kconfig INFINIBAND_ADDR_TRANS depends on INFINIBAND.  So yes, it seems
> redundant.  I don't know if anyone has designs to break this dependency and
> allow for ADDR_TRANS without INFINIBAND.  Assuming not, I'd be willing to
> amend my series removing redundant INFINIBAND and a followup series to
> remove it from similar depends.  Though I'm not familiar with rdma dev tree
> lifecycle.  Is rdma/for-rc a throw away branch (akin to linux-next), or
> will it be merged into linus/master?  If throwaway, then we can amend
> its patches, otherwise followups will be needed.
> 
> Let me know what you'd prefer.  Thanks.

I think a single update patch to fix all of these, and the
pre-existing ones would be great

Jason