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ARM: riscpc: make ecard_bus_type constant

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Since commit d492cc2573 ("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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240823081444.150976-1-kunwu.chan@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kunwu Chan 2024-08-23 16:14:44 +08:00 committed by Greg Kroah-Hartman
parent 51796f5e29
commit f554b68eaf
2 changed files with 2 additions and 2 deletions
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2
arch/arm/include/asm/ecard.h
View File

@ -195,7 +195,7 @@ void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
unsigned long offset, unsigned long maxsize); unsigned long offset, unsigned long maxsize);
#define ecardm_iounmap(__ec, __addr) devm_iounmap(&(__ec)->dev, __addr) #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) #define ECARD_DEV(_d) container_of((_d), struct expansion_card, dev)

2
arch/arm/mach-rpc/ecard.c
View File

@ -1124,7 +1124,7 @@ static int ecard_match(struct device *_dev, const struct device_driver *_drv)
return ret; return ret;
} }
struct bus_type ecard_bus_type = { const struct bus_type ecard_bus_type = {
.name = "ecard", .name = "ecard",
.dev_groups = ecard_dev_groups, .dev_groups = ecard_dev_groups,
.match = ecard_match, .match = ecard_match,