net: convert usage of packet_type to read_mostly
Protocols that use packet_type can be __read_mostly section for better
locality. Elminate any unnecessary initializations of NULL.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wan/hdlc.c b/drivers/net/wan/hdlc.c
index 5ce4372..7596eae 100644
--- a/drivers/net/wan/hdlc.c
+++ b/drivers/net/wan/hdlc.c
@@ -348,7 +348,7 @@
EXPORT_SYMBOL(attach_hdlc_protocol);
EXPORT_SYMBOL(detach_hdlc_protocol);
-static struct packet_type hdlc_packet_type = {
+static struct packet_type hdlc_packet_type __read_mostly = {
.type = cpu_to_be16(ETH_P_HDLC),
.func = hdlc_rcv,
};