Commit f554b68e authored by Kunwu Chan's avatar Kunwu Chan Committed by Greg Kroah-Hartman
Browse files

ARM: riscpc: make ecard_bus_type constant 



Since commit d492cc25 ("driver core: device.h: make struct
bus_type a const *"), 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@linuxfoundation.org>
Suggested-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarKunwu Chan <chentao@kylinos.cn>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240823081444.150976-1-kunwu.chan@linux.dev


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 51796f5e

arch/arm/include/asm/ecard.h

+1 −1
Original line number Diff line number Diff line
@@ -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)

arch/arm/mach-rpc/ecard.c

+1 −1
Original line number Diff line number Diff line
@@ -1124,7 +1124,7 @@ static int ecard_match(struct device *_dev, const 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,