linux-kernel - [PATCH 3/3] nand: make Open Firmware device id constant

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Date:	Sat, 09 Jan 2010 15:10:46 +0100
From:	Németh Márton <nm127@...email.hu>
To:	David Woodhouse <dwmw2@...radead.org>,
	Joern Engel <joern@...fs.org>
CC:	linux-mtd@...ts.infradead.org, Julia Lawall <julia@...u.dk>,
	cocci@...u.dk, LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] nand: make Open Firmware device id constant

From: Márton Németh <nm127@...email.hu>

The match_table field of the struct of_device_id is constant in <linux/of_platform.h>
so it is worth to make xps2_of_match 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@...email.hu>
Cc: Julia Lawall <julia@...u.dk>
Cc: cocci@...u.dk
---
diff -u -p a/drivers/mtd/nand/pasemi_nand.c b/drivers/mtd/nand/pasemi_nand.c
--- a/drivers/mtd/nand/pasemi_nand.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/mtd/nand/pasemi_nand.c 2010-01-08 04:26:40.000000000 +0100
@@ -209,7 +209,7 @@ static int __devexit pasemi_nand_remove(
 	return 0;
 }

-static struct of_device_id pasemi_nand_match[] =
+static const struct of_device_id pasemi_nand_match[] =
 {
 	{
 		.compatible   = "pasemi,localbus-nand",
diff -u -p a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c
--- a/drivers/mtd/nand/fsl_upm.c 2010-01-07 19:08:42.000000000 +0100
+++ b/drivers/mtd/nand/fsl_upm.c 2010-01-08 04:28:52.000000000 +0100
@@ -349,7 +349,7 @@ static int __devexit fun_remove(struct o
 	return 0;
 }

-static struct of_device_id of_fun_match[] = {
+static const struct of_device_id of_fun_match[] = {
 	{ .compatible = "fsl,upm-nand" },
 	{},
 };
diff -u -p a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c
--- a/drivers/mtd/nand/socrates_nand.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/mtd/nand/socrates_nand.c 2010-01-08 04:29:01.000000000 +0100
@@ -290,7 +290,7 @@ static int __devexit socrates_nand_remov
 	return 0;
 }

-static struct of_device_id socrates_nand_match[] =
+static const struct of_device_id socrates_nand_match[] =
 {
 	{
 		.compatible   = "abb,socrates-nand",
--
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