media: cec: make cec_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the cec_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>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/cec/core/cec-core.c b/drivers/media/cec/core/cec-core.c
index 7e153c5cad04f50d58824da520cc019409bd4a87..5a54db839e5d641db9d635a43a74a71e1cfe2bfd 100644 (file)
--- a/drivers/media/cec/core/cec-core.c
+++ b/drivers/media/cec/core/cec-core.c
@@ -93,7 +93,7 @@ static void cec_devnode_release(struct device *cd)
        cec_delete_adapter(to_cec_adapter(devnode));
 }
 
-static struct bus_type cec_bus_type = {
+static const struct bus_type cec_bus_type = {
        .name = CEC_NAME,
 };