sparc: vio: make vio_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the vio_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>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/20240204-bus_cleanup-sparc-v1-1-4ca7fe8de5f7@marliere.net

diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index b78df3a15a72ed48e89bf39eff6aa77c19b60ef2..846a55f942d4e755b0df2ba6898e1e05024ff2bd 100644 (file)
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -149,7 +149,7 @@ static struct attribute *vio_dev_attrs[] = {
  };
 ATTRIBUTE_GROUPS(vio_dev);
 
-static struct bus_type vio_bus_type = {
+static const struct bus_type vio_bus_type = {
        .name           = "vio",
        .dev_groups     = vio_dev_groups,
        .uevent         = vio_hotplug,