The phonet_protocol structs don't need to be written by anyone and
so can be marked as const.

Signed-off-by: Lin Zhang <redacted>
---
changelog:

v1 -> v2:
	* remove __read_mostly tag
---
 include/net/phonet/phonet.h |  6 ++++--
 net/phonet/af_phonet.c      | 15 ++++++++-------
 net/phonet/datagram.c       |  2 +-
 net/phonet/pep.c            |  2 +-
 4 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/include/net/phonet/phonet.h b/include/net/phonet/phonet.h
index 039cc29..51e1a2a 100644
--- a/include/net/phonet/phonet.h
+++ b/include/net/phonet/phonet.h

@@ -108,8 +108,10 @@ struct phonet_protocol {
 	int			sock_type;
 };

-int phonet_proto_register(unsigned int protocol, struct phonet_protocol

*pp); -void phonet_proto_unregister(unsigned int protocol, struct
phonet_protocol *pp); +int phonet_proto_register(unsigned int protocol,
+		const struct phonet_protocol *pp);
+void phonet_proto_unregister(unsigned int protocol,
+		const struct phonet_protocol *pp);

 int phonet_sysctl_init(void);
 void phonet_sysctl_exit(void);

diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index b12142e..63b9870 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c

@@ -35,11 +35,11 @@
 #include <net/phonet/pn_dev.h>

 /* Transport protocol registration */
-static struct phonet_protocol *proto_tab[PHONET_NPROTO] __read_mostly;
+static const struct phonet_protocol *proto_tab[PHONET_NPROTO];