linux-kernel - Re: [PATCH 03/15] wm8350_power: use permission-specific DEVICE

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Date:   Sun, 30 Oct 2016 15:03:05 +0000
From:   Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:     Julia Lawall <Julia.Lawall@...6.fr>
CC:     Sebastian Reichel <sre@...nel.org>,
        <kernel-janitors@...r.kernel.org>,
        <patches@...nsource.wolfsonmicro.com>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/15] wm8350_power: use permission-specific DEVICE_ATTR
 variants

On Sat, Oct 29, 2016 at 09:36:57PM +0200, Julia Lawall wrote:
> Use DEVICE_ATTR_RO for read only attributes.  This simplifies the source
> code, improves readbility, and reduces the chance of inconsistencies.
> 
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @ro@
> declarer name DEVICE_ATTR;
> identifier x,x_show;
> @@
> 
> DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
> 
> @script:ocaml@
> x << ro.x;
> x_show << ro.x_show;
> @@
> 
> if not (x^"_show" = x_show) then Coccilib.include_match false
> 
> @@
> declarer name DEVICE_ATTR_RO;
> identifier ro.x,ro.x_show;
> @@
> 
> - DEVICE_ATTR(x, \(0444\|S_IRUGO\), x_show, NULL);
> + DEVICE_ATTR_RO(x);
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
> 
> ---

Acked-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com> 

Thanks,
Charles