linux-kernel - Re: linux-next: percpu tree build warning

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Date:	Thu, 12 Nov 2009 10:16:48 -0500 (EST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
cc:	Tejun Heo <tj@...nel.org>, Rusty Russell <rusty@...tcorp.com.au>,
	Ingo Molnar <mingo@...e.hu>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: linux-next: percpu tree build warning

On Thu, 12 Nov 2009, Stephen Rothwell wrote:

> Hi all,
>
> Today's linux-next build (powerpc ppc64_defconfig) produced this warning:
>
> drivers/net/loopback.c: In function 'loopback_get_stats':
> drivers/net/loopback.c:109: warning: initialization discards qualifiers from pointer target type
>
> The line in question is:
>
> 	lb_stats = per_cpu_ptr(pcpu_lstats, i);
>
> Where "lb_stats" and "pcpu_lstats" are both "const struct pcpu_lstats
> *".  I guess this is because of __verify_pcpu_ptr().

hmm... pcpu_lstats needs to be correctly qualified I guess.

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