linux-kernel - RE: [PATCH v2 02/16] remoteproc: add release ops in rproc_mem

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Date:   Fri, 12 Jan 2018 07:43:52 +0000
From:   Loic PALLARDY <loic.pallardy@...com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
CC:     "ohad@...ery.com" <ohad@...ery.com>,
        "linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Arnaud POULIQUEN <arnaud.pouliquen@...com>,
        "benjamin.gaignard@...aro.org" <benjamin.gaignard@...aro.org>
Subject: RE: [PATCH v2 02/16] remoteproc: add release ops in rproc_mem_entry
 struct



> -----Original Message-----
> From: Bjorn Andersson [mailto:bjorn.andersson@...aro.org]
> Sent: Thursday, December 14, 2017 1:34 AM
> To: Loic PALLARDY <loic.pallardy@...com>
> Cc: ohad@...ery.com; linux-remoteproc@...r.kernel.org; linux-
> kernel@...r.kernel.org; Arnaud POULIQUEN <arnaud.pouliquen@...com>;
> benjamin.gaignard@...aro.org
> Subject: Re: [PATCH v2 02/16] remoteproc: add release ops in
> rproc_mem_entry struct
> 
> On Thu 30 Nov 08:46 PST 2017, Loic Pallardy wrote:
> 
> > +static int rproc_release_carveout(struct rproc *rproc, struct
> rproc_mem_entry *mem)
> > +{
> > +	struct device *dev = &rproc->dev;
> > +
> > +	/* clean up carveout allocations */
> > +	dma_free_coherent(dev->parent, mem->len, mem->va, mem-
> >dma);
> > +	list_del(&mem->node);
> 
> The core is responsible for putting the node on a list, so let the
> cleanup take if off the list.
ok
> 
> > +	kfree(mem);
> > +	return 0;
> > +}
> > +
> [..]
> > @@ -319,12 +322,11 @@ struct rproc_mem_entry {
> >  	dma_addr_t dma;
> >  	int len;
> >  	u32 da;
> > +	int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);
> 
> The placement here seems random, please move it last in the struct.
ok
> 
> >  	void *priv;
> >  	struct list_head node;
> >  };
> >
> 
> Regards,
> Bjorn