[PATCH 2/2] ARM: ecard: make ecard_bus_type const

[Ricardo B. Marliere]

Now that the driver core can properly handle constant struct bus_type,
move the ecard_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo at marliere.net>
---
 arch/arm/include/asm/ecard.h | 2 +-
 arch/arm/mach-rpc/ecard.c    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/ecard.h b/arch/arm/include/asm/ecard.h
index 4befe8d2ae19..7cbe001bf9cc 100644
--- a/arch/arm/include/asm/ecard.h
+++ b/arch/arm/include/asm/ecard.h
@@ -195,7 +195,7 @@ void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
 			   unsigned long offset, unsigned long maxsize);
 #define ecardm_iounmap(__ec, __addr)	devm_iounmap(&(__ec)->dev, __addr)
 
-extern struct bus_type ecard_bus_type;
+extern const struct bus_type ecard_bus_type;
 
 #define ECARD_DEV(_d)	container_of((_d), struct expansion_card, dev)
 
diff --git a/arch/arm/mach-rpc/ecard.c b/arch/arm/mach-rpc/ecard.c
index c30df1097c52..4b843cffcac2 100644
--- a/arch/arm/mach-rpc/ecard.c
+++ b/arch/arm/mach-rpc/ecard.c
@@ -1124,7 +1124,7 @@ static int ecard_match(struct device *_dev, struct device_driver *_drv)
 	return ret;
 }
 
-struct bus_type ecard_bus_type = {
+const struct bus_type ecard_bus_type = {
 	.name		= "ecard",
 	.dev_groups	= ecard_dev_groups,
 	.match		= ecard_match,

-- 
2.43.0