linux-kernel - Re: [PATCH v2 1/5] of/platform: Generalize /reserved-memory handling

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Message-ID: <20170803233334.GC29306@minitux>
Date:   Thu, 3 Aug 2017 16:33:34 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Rob Herring <robh+dt@...nel.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:ARM/QUALCOMM SUPPORT" <linux-soc@...r.kernel.org>
Subject: Re: [PATCH v2 1/5] of/platform: Generalize /reserved-memory handling

On Thu 03 Aug 10:40 PDT 2017, Rob Herring wrote:

> On Wed, Aug 2, 2017 at 9:57 PM, Bjorn Andersson
> <bjorn.andersson@...aro.org> wrote:
> > diff --git a/drivers/of/platform.c b/drivers/of/platform.c
[..]
> > +       rmem_nodes = of_find_node_by_path("/reserved-memory");
> > +       for_each_available_child_of_node(rmem_nodes, node) {
> > +               ret = of_device_compatible_match(node, rmem_compats);
> > +               if (ret)
> 
> I would just do:
> 
> for_each_matching_node(node, ...)
>     of_platform_device_create(node, NULL, NULL);
> 
> I don't think the kernel has to validate that ramoops and any others
> we add are children of /reserved-memory. We should only have those
> compatibles located there and any other location would be an error.
> 

Okay, looks reasonable.

Will update and resend once I know your decision on 2/5.

Regards,
Bjorn