From: "Németh Márton" <nm127@freemail.hu>
To: Dan Williams <dan.j.williams@intel.com>,
Maciej Sosnowski <maciej.sosnowski@intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Julia Lawall <julia@diku.dk>,
cocci@diku.dk
Subject: [PATCH] dma: make Open Firmware device id constant
Date: Tue, 12 Jan 2010 08:58:42 +0100 [thread overview]
Message-ID: <4B4C2BB2.5050308@freemail.hu> (raw)
From: Márton Németh <nm127@freemail.hu>
The match_table field of the struct of_device_id is constant in <linux/of_platform.h>
so it is worth to make the initialization data also constant.
The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
struct I1 {
...
const struct I2 *x;
...
};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
struct I1 y = {
.x = E,
};
@c@
identifier r.I2;
identifier s.E;
@@
const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+ const
struct I2 E[] = ...;
// </smpl>
Signed-off-by: Márton Németh <nm127@freemail.hu>
Cc: Julia Lawall <julia@diku.dk>
Cc: cocci@diku.dk
---
diff -u -p a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
--- a/drivers/dma/ppc4xx/adma.c 2010-01-07 19:08:39.000000000 +0100
+++ b/drivers/dma/ppc4xx/adma.c 2010-01-08 14:22:37.000000000 +0100
@@ -4940,7 +4940,7 @@ out_free:
return ret;
}
-static struct of_device_id __devinitdata ppc440spe_adma_of_match[] = {
+static const struct of_device_id ppc440spe_adma_of_match[] __devinitconst = {
{ .compatible = "ibm,dma-440spe", },
{ .compatible = "amcc,xor-accelerator", },
{},
diff -u -p a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
--- a/drivers/dma/fsldma.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/dma/fsldma.c 2010-01-08 14:22:49.000000000 +0100
@@ -1274,7 +1274,7 @@ static int of_fsl_dma_remove(struct of_d
return 0;
}
-static struct of_device_id of_fsl_dma_ids[] = {
+static const struct of_device_id of_fsl_dma_ids[] = {
{ .compatible = "fsl,eloplus-dma", },
{ .compatible = "fsl,elo-dma", },
{}
reply other threads:[~2010-01-12 7:58 UTC|newest]
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