powerpc/macintosh: Make Open Firmware device id constant

Author: Márton Németh <nm127@freemail.hu>

The match_table field of the struct of_device_id is constant in 
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/)

// 
@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[] = ...;
// 

Signed-off-by: Márton Németh 
Cc: Julia Lawall 
Cc: cocci@diku.dk
Signed-off-by: Benjamin Herrenschmidt

---
 drivers/macintosh/smu.c              | 2 +-
 drivers/macintosh/therm_pm72.c       | 2 +-
 drivers/macintosh/therm_windtunnel.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
 
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index 96faa79..f96feeb 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -660,7 +660,7 @@ static int smu_platform_probe(struct of_device* dev,
 	return 0;
 }
 
-static struct of_device_id smu_platform_match[] =
+static const struct of_device_id smu_platform_match[] =
 {
 	{
 		.type		= "smu",
diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index ea32c7e..454bc50 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -2211,7 +2211,7 @@ static int fcu_of_remove(struct of_device* dev)
 	return 0;
 }
 
-static struct of_device_id fcu_match[] = 
+static const struct of_device_id fcu_match[] = 
 {
 	{
 	.type		= "fcu",
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
index 3fbe41b..ba48fd7 100644
--- a/drivers/macintosh/therm_windtunnel.c
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -457,7 +457,7 @@ therm_of_remove( struct of_device *dev )
 	return 0;
 }
 
-static struct of_device_id therm_of_match[] = {{
+static const struct of_device_id therm_of_match[] = {{
 	.name		= "fan",
 	.compatible	= "adm1030"
     }, {}

powerpc/macintosh: Make Open Firmware device id constant

qlambert

Archives

Posts by Subject