linux-kernel - Re: [RFC PATCH 01/14] devres: Add devm_of

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Date:   Fri, 29 Jun 2018 11:14:47 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        linux-aspeed@...ts.ozlabs.org,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Andrew Jeffery <andrew@...id.au>
Subject: Re: [RFC PATCH 01/14] devres: Add devm_of_iomap()

On Fri, Jun 22, 2018 at 6:31 AM Benjamin Herrenschmidt
<benh@...nel.crashing.org> wrote:

> There are still quite a few cases where a device might want
> to get to a different node of the device-tree, obtain the
> resources and map them.
>
> We have of_iomap() and of_io_request_and_map() but they both
> have shortcomings, such as not returning the size of the
> resource found (which can be useful) and not being "managed".
>
> This adds a devm_of_iomap() that provides all of these and
> should probably replace uses of the above in most drivers.
>
> Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>

Ugh I just feel I have seen homecooked solutions to this problem
a few times :/

I wonder if it is easy to find these cases and replace them with
this neat function...

Thanks for doing this.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij