[PATCH] uml: const more data

Make lots of structures const in order to make it obvious that they need no
locking.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c
index 1c555c3..abec620 100644
--- a/arch/um/drivers/pty.c
+++ b/arch/um/drivers/pty.c
@@ -22,7 +22,7 @@
 	char dev_name[sizeof("/dev/pts/0123456\0")];
 };
 
-static void *pty_chan_init(char *str, int device, struct chan_opts *opts)
+static void *pty_chan_init(char *str, int device, const struct chan_opts *opts)
 {
 	struct pty_chan *data;
 
@@ -118,7 +118,7 @@
 	return(fd);
 }
 
-struct chan_ops pty_ops = {
+const struct chan_ops pty_ops = {
 	.type		= "pty",
 	.init		= pty_chan_init,
 	.open		= pty_open,
@@ -131,7 +131,7 @@
 	.winch		= 0,
 };
 
-struct chan_ops pts_ops = {
+const struct chan_ops pts_ops = {
 	.type		= "pts",
 	.init		= pty_chan_init,
 	.open		= pts_open,