linux-kernel - Re: [08/15] powerpc/iommu: use permission-specific DEVICE

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Message-Id: <3xkKpy0Lxrz9t2d@ozlabs.org>
Date:   Fri,  1 Sep 2017 23:29:45 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Julia Lawall <Julia.Lawall@...6.fr>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     Paul Mackerras <paulus@...ba.org>, kernel-janitors@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [08/15] powerpc/iommu: use permission-specific DEVICE_ATTR variants

On Sat, 2016-10-29 at 19:37:02 UTC, Julia Lawall wrote:
> Use DEVICE_ATTR_RW for read-write 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>
> @rw@
> declarer name DEVICE_ATTR;
> identifier x,x_show,x_store;
> @@
> 
> DEVICE_ATTR(x, \(0644\|S_IRUGO|S_IWUSR\), x_show, x_store);
> 
> @script:ocaml@
> x << rw.x;
> x_show << rw.x_show;
> x_store << rw.x_store;
> @@
> 
> if not (x^"_show" = x_show && x^"_store" = x_store)
> then Coccilib.include_match false
> 
> @@
> declarer name DEVICE_ATTR_RW;
> identifier rw.x,rw.x_show,rw.x_store;
> @@
> 
> - DEVICE_ATTR(x, \(0644\|S_IRUGO|S_IWUSR\), x_show, x_store);
> + DEVICE_ATTR_RW(x);
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
> Acked-by: Michael Ellerman <mpe@...erman.id.au> (powerpc)

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/8a7aef2cb3dafd2e8560750f4e5ad2

cheers