Now that the driver core can properly handle constant struct bus_type,
move the fsi_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>
---
 drivers/fsi/fsi-core.c | 2 +-
 include/linux/fsi.h    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 097d5a780264..f0ffc2cbcbdf 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -1404,7 +1404,7 @@ void fsi_driver_unregister(struct fsi_driver *fsi_drv)
 }
 EXPORT_SYMBOL_GPL(fsi_driver_unregister);
 
-struct bus_type fsi_bus_type = {
+const struct bus_type fsi_bus_type = {
 	.name		= "fsi",
 	.match		= fsi_bus_match,
 };
diff --git a/include/linux/fsi.h b/include/linux/fsi.h
index 3df8c54868df..e4b1ae7a2234 100644
--- a/include/linux/fsi.h
+++ b/include/linux/fsi.h
@@ -68,7 +68,7 @@ extern int fsi_slave_read(struct fsi_slave *slave, uint32_t addr,
 extern int fsi_slave_write(struct fsi_slave *slave, uint32_t addr,
 		const void *val, size_t size);
 
-extern struct bus_type fsi_bus_type;
+extern const struct bus_type fsi_bus_type;
 extern const struct device_type fsi_cdev_type;
 
 enum fsi_dev_type {

---
base-commit: c5eeb63edac9497f9a0d46d3b75cf8b293771ecf
change-id: 20240208-bus_cleanup-fsi-e5e7526703ed

Best regards,
-- 
Ricardo B. Marliere <ricardo@marliere.net>

On Thu, Feb 08, 2024 at 05:05:29PM -0300, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the fsi_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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

On 2/9/24 04:31, Greg Kroah-Hartman wrote:
> On Thu, Feb 08, 2024 at 05:05:29PM -0300, Ricardo B. Marliere wrote:
>> Now that the driver core can properly handle constant struct bus_type,
>> move the fsi_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>


Thanks.

Reviewed-by: Eddie James <eajames@linux.ibm.com>


> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>