linux-kernel - Re: [PATCH 03/12] m68k/mac: Don't remap SWIM MMIO region

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Message-ID: <20180409151727.pcvgbfymbr65amy2@ltop.local>
Date:   Mon, 9 Apr 2018 17:17:28 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Finn Thain <fthain@...egraphics.com.au>,
        Laurent Vivier <lvivier@...hat.com>,
        Jens Axboe <axboe@...nel.dk>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/12] m68k/mac: Don't remap SWIM MMIO region

On Mon, Apr 09, 2018 at 02:54:30PM +0200, Geert Uytterhoeven wrote:
> >
> > -       swim_base = ioremap(res->start, resource_size(res));
> > +       swim_base = (struct swim __iomem *)res->start;
> 
> I guess you need a __force to please sparse?

Hi,

Only pointer-to-pointer conversions may need __force.
The logic being if you use an integer type to hold an address
this address is typeless anyway and has no address-space, so
extra checking is not done in this case and the cast in itself
is enough.

Cheers,
-- Luc