1 files changed, 3 insertions, 3 deletions

diff --git a/arch/um/include/chan_kern.h b/arch/um/include/chan_kern.h
index 1bb5e9d94270..572d286ed2c6 100644
--- a/arch/um/include/chan_kern.h
+++ b/arch/um/include/chan_kern.h
@@ -23,21 +23,21 @@ struct chan {
         unsigned int opened:1;
         unsigned int enabled:1;
         int fd;
-        struct chan_ops *ops;
+        const struct chan_ops *ops;
         void *data;
 };
 
 extern void chan_interrupt(struct list_head *chans, struct work_struct *task,
                            struct tty_struct *tty, int irq);
 extern int parse_chan_pair(char *str, struct line *line, int device,
-                           struct chan_opts *opts);
+                           const struct chan_opts *opts);
 extern int open_chan(struct list_head *chans);
 extern int write_chan(struct list_head *chans, const char *buf, int len,
                              int write_irq);
 extern int console_write_chan(struct list_head *chans, const char *buf, 
                               int len);
 extern int console_open_chan(struct line *line, struct console *co,
-                             struct chan_opts *opts);
+                             const struct chan_opts *opts);
 extern void deactivate_chan(struct list_head *chans, int irq);
 extern void reactivate_chan(struct list_head *chans, int irq);
 extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);