linux-kernel - Re: [PATCH v2 1/2] IB/qib: remove superfluous fallthrough statements

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Date:   Wed, 26 Aug 2020 20:41:20 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     Alex Dewar <alex.dewar90@...il.com>, dennis.dalessandro@...el.com,
        dledford@...hat.com, gustavo@...eddedor.com,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        mike.marciniszyn@...el.com, roland@...estorage.com
Subject: Re: [PATCH v2 1/2] IB/qib: remove superfluous fallthrough statements

On Wed, Aug 26, 2020 at 09:11:49PM -0300, Jason Gunthorpe wrote:
> On Wed, Aug 26, 2020 at 02:18:59PM -0500, Gustavo A. R. Silva wrote:
> > Hi,
> > 
> > On Tue, Aug 25, 2020 at 02:33:27PM -0500, Gustavo A. R. Silva wrote:
> > > On Tue, Aug 25, 2020 at 06:12:42PM +0100, Alex Dewar wrote:
> > > > Commit 36a8f01cd24b ("IB/qib: Add congestion control agent implementation")
> > > > erroneously marked a couple of switch cases as /* FALLTHROUGH */, which
> > > > were later converted to fallthrough statements by commit df561f6688fe
> > > > ("treewide: Use fallthrough pseudo-keyword"). This triggered a Coverity
> > > > warning about unreachable code.
> > > >
> > > 
> > > It's worth mentioning that this warning is triggered only by compilers
> > > that don't support __attribute__((__fallthrough__)), which has been
> > > supported since GCC 7.1.
> > > 
> > > > Remove the fallthrough statements.
> > > > 
> > > > Addresses-Coverity: ("Unreachable code")
> > > > Fixes: 36a8f01cd24b ("IB/qib: Add congestion control agent implementation")
> > > > Signed-off-by: Alex Dewar <alex.dewar90@...il.com>
> > > 
> > > Reviewed-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> > > 
> > 
> > I can take this in my tree for 5.9-rc3.
> 
> That would make conflicts for the 2nd patch, lets just send them all
> through the rdma tree please.

OK.

> Is there a reason this is -rc material?

It's just that this warning is currently in mainline.

Thanks
--
Gustavo