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firmware: arm_ffa: Make ffa_bus_type const

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Now that the driver core can properly handle constant struct bus_type,
move the ffa_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: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240211-bus_cleanup-firmware2-v1-1-1851c92c7be7@marliere.net
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Ricardo B. Marliere 2024-02-11 12:51:29 -03:00 committed by Sudeep Holla
parent 6613476e22
commit 989e8661dc
2 changed files with 2 additions and 2 deletions
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2
drivers/firmware/arm_ffa/bus.c
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@ -105,7 +105,7 @@ static struct attribute *ffa_device_attributes_attrs[] = {
};
ATTRIBUTE_GROUPS(ffa_device_attributes);
struct bus_type ffa_bus_type = {
const struct bus_type ffa_bus_type = {
.name = "arm_ffa",
.match = ffa_device_match,
.probe = ffa_device_probe,

2
include/linux/arm_ffa.h
View File

@ -209,7 +209,7 @@ bool ffa_device_is_valid(struct ffa_device *ffa_dev) { return false; }
#define module_ffa_driver(__ffa_driver) \
module_driver(__ffa_driver, ffa_register, ffa_unregister)
extern struct bus_type ffa_bus_type;
extern const struct bus_type ffa_bus_type;
/* FFA transport related */
struct ffa_partition_info {