platform: x86: ibm_rtl: make rtl_subsys const

Now that the driver core can properly handle constant struct bus_type,
move the rtl_subsys 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>
Link: https://lore.kernel.org/r/20240204-bus_cleanup-platform-drivers-x86-v1-2-1f0839b385c6@marliere.net
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff --git a/drivers/platform/x86/ibm_rtl.c b/drivers/platform/x86/ibm_rtl.c
index 2ab7d9ac542d1814fad533c9e8b68c5ac53815d4..1d4bbae115f1fb583446cf4913c687c243374880 100644 (file)
--- a/drivers/platform/x86/ibm_rtl.c
+++ b/drivers/platform/x86/ibm_rtl.c
@@ -179,7 +179,7 @@ static ssize_t rtl_set_state(struct device *dev,
        return ret;
 }
 
-static struct bus_type rtl_subsys = {
+static const struct bus_type rtl_subsys = {
        .name = "ibm_rtl",
        .dev_name = "ibm_rtl",
 };