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ACPI: bus: make acpi_bus_type const

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

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ricardo B. Marliere 2024-02-11 12:37:11 -03:00 committed by Rafael J. Wysocki
parent 841c351693
commit 592190b598
2 changed files with 2 additions and 2 deletions
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2
drivers/acpi/bus.c
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@ -1097,7 +1097,7 @@ static void acpi_device_remove(struct device *dev)
put_device(dev);
}
struct bus_type acpi_bus_type = {
const struct bus_type acpi_bus_type = {
.name = "acpi",
.match = acpi_bus_match,
.probe = acpi_device_probe,

2
include/acpi/acpi_bus.h
View file

@ -582,7 +582,7 @@ void acpi_initialize_hp_context(struct acpi_device *adev,
void (*uevent)(struct acpi_device *, u32));
/* acpi_device.dev.bus == &acpi_bus_type */
extern struct bus_type acpi_bus_type;
extern const struct bus_type acpi_bus_type;
int acpi_bus_for_each_dev(int (*fn)(struct device *, void *), void *data);
int acpi_dev_for_each_child(struct acpi_device *adev,