netdev - Re: [PATCH] net, mellanox mlx4 Fix compile warnings

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Message-ID: <20130915091400.49f90bc4@jpm-OptiPlex-GX620>
Date:	Sun, 15 Sep 2013 09:14:00 +0300
From:	Jack Morgenstein <jackm@....mellanox.co.il>
To:	Or Gerlitz <or.gerlitz@...il.com>
Cc:	Prarit Bhargava <prarit@...hat.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Doug Ledford <dledford@...hat.com>,
	Amir Vadai <amirv@...lanox.com>,
	Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [PATCH] net, mellanox mlx4 Fix compile warnings

On Sat, 14 Sep 2013 22:10:19 +0300
Or Gerlitz <or.gerlitz@...il.com> wrote:

> > +       struct res_cq *uninitialized_var(cq);
> >
> >         err = cq_res_start_move_to(dev, slave, cqn,
> > RES_CQ_ALLOCATED, &cq);

I have no objection. However, I don't know if the compiler is being too
clever here or too stupid.  The cq variable is initialized in
cq_res_start_move_to(), but the compiler is ignoring this -- or maybe
it is simply not assuming that cq will in fact be
initialized by the called procedure?

In any event, this change cannot hurt.

-Jack 
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