kunit: make kunit_bus_type const

Since commit d492cc2573a0 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the kunit_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: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

diff --git a/lib/kunit/device.c b/lib/kunit/device.c
index 644a38a..e206415 100644 (file)
--- a/lib/kunit/device.c
+++ b/lib/kunit/device.c
@@ -35,7 +35,7 @@ struct kunit_device {
 
 #define to_kunit_device(d) container_of_const(d, struct kunit_device, dev)
 
-static struct bus_type kunit_bus_type = {
+static const struct bus_type kunit_bus_type = {
        .name           = "kunit",
 };