linux-kernel - Re: [PATCH] IB/lmx4: silence GCC warning

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Message-ID: <1351504201.1339.4.camel@x61.thuisdomein>
Date:	Mon, 29 Oct 2012 10:50:01 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Jack Morgenstein <jackm@....mellanox.co.il>
Cc:	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] IB/lmx4: silence GCC warning

On Wed, 2012-10-10 at 09:23 +0200, Jack Morgenstein wrote:
> You could use:
> 
>    u16 uninitialized_var(vlan);
> 
> instead.

I guess we'd better just wait and see whether uninitialized_var()
survives before discussing your suggestion (see the thread starting at
https://lkml.org/lkml/2012/10/26/508 ).

> Although this in the special QP data flow, I still prefer to avoid adding extra code (even setting
> initial values at procedure entry).  The line above will also do the job.  "uninitialized_var"
> is used elsewhere in the driver.  See, for example, mlx4_ib_post_send() in the same file (qp.c).


Paul Bolle

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