Check for net_device_ops structures that are only stored in the netdev_ops field of a net_device structure. This field is declared const, so net_device_ops structures that have this property can be declared as const also.
The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct net_device_ops i@p = { ... }; @ok@ identifier r.i; struct net_device e; position p; @@ e.netdev_ops = &i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct net_device_ops e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct net_device_ops i = { ... }; // </smpl> The result of size on this file before the change is: text data bss dec hex filename 3401 931 44 4376 1118 net/l2tp/l2tp_eth.o and after the change it is: text data bss dec hex filename 3993 347 44 4384 1120 net/l2tp/l2tp_eth.o Signed-off-by: Julia Lawall <julia.law...@lip6.fr> --- net/l2tp/l2tp_eth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c index 57fc5a4..ddb744c 100644 --- a/net/l2tp/l2tp_eth.c +++ b/net/l2tp/l2tp_eth.c @@ -121,7 +121,7 @@ static struct rtnl_link_stats64 *l2tp_eth_get_stats64(struct net_device *dev, } -static struct net_device_ops l2tp_eth_netdev_ops = { +static const struct net_device_ops l2tp_eth_netdev_ops = { .ndo_init = l2tp_eth_dev_init, .ndo_uninit = l2tp_eth_dev_uninit, .ndo_start_xmit = l2tp_eth_dev_xmit,
