genetlink: mark families as __ro_after_init
Now genl_register_family() is the only thing (other than the
users themselves, perhaps, but I didn't find any doing that)
writing to the family struct.
In all families that I found, genl_register_family() is only
called from __init functions (some indirectly, in which case
I've add __init annotations to clarifly things), so all can
actually be marked __ro_after_init.
This protects the data structure from accidental corruption.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/irda/irnetlink.c b/net/irda/irnetlink.c
index 0787734..7fc340e 100644
--- a/net/irda/irnetlink.c
+++ b/net/irda/irnetlink.c
@@ -141,7 +141,7 @@
};
-static struct genl_family irda_nl_family = {
+static struct genl_family irda_nl_family __ro_after_init = {
.name = IRDA_NL_NAME,
.hdrsize = 0,
.version = IRDA_NL_VERSION,
@@ -151,7 +151,7 @@
.n_ops = ARRAY_SIZE(irda_nl_ops),
};
-int irda_nl_register(void)
+int __init irda_nl_register(void)
{
return genl_register_family(&irda_nl_family);
}