[PATCH] fsi: core: make fsi_bus_type const

Ricardo B. Marliere ricardo at marliere.net
Fri Feb 9 07:05:10 AEDT 2024

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 at linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo at 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)
-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 at marliere.net>

More information about the linux-fsi mailing list