netdev - Re: [PATCH 3/4] crypto: caam: Unembed net

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Date: Tue, 2 Jul 2024 06:32:37 -0700
From: Breno Leitao <leitao@...ian.org>
To: Simon Horman <horms@...nel.org>
Cc: linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org,
	Horia Geantă <horia.geanta@....com>,
	Pankaj Gupta <pankaj.gupta@....com>,
	Gaurav Jain <gaurav.jain@....com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 3/4] crypto: caam: Unembed net_dev structure from qi

Hello Simon,

On Fri, Jun 28, 2024 at 05:32:26PM +0100, Simon Horman wrote:
> On Mon, Jun 24, 2024 at 09:21:21AM -0700, Breno Leitao wrote:

> > @@ -530,6 +530,7 @@ static void caam_qi_shutdown(void *data)
> >  
> >  		if (kill_fq(qidev, per_cpu(pcpu_qipriv.rsp_fq, i)))
> >  			dev_err(qidev, "Rsp FQ kill failed, cpu: %d\n", i);
> > +		free_netdev(pcpu_qipriv.net_dev);

> Hi Breno,
> 
> I don't think you can access pcpu_qipriv.net_dev like this,
> as pcpu_qipriv is a per-cpu variable. Perhaps this?
> 
> 	free_netdev(per_cpu(pcpu_qipriv.net_dev, i));

You are absolutely correct. Let me fix it.

> Flagged by Sparse.

Thanks. I've just added sparse to my development workflow, and I can see
it also:

	drivers/crypto/caam/qi.c:533:29: warning: dereference of noderef expression

Thanks for the review. I will send an updated version.

--breno