1 files changed, 2 insertions, 1 deletions

diff --git a/arch/um/include/chan_user.h b/arch/um/include/chan_user.h
index 714b713e2e72..5a2263e05bb2 100644
--- a/arch/um/include/chan_user.h
+++ b/arch/um/include/chan_user.h
@@ -42,7 +42,8 @@ extern void generic_free(void *data);
 
 struct tty_struct;
 extern void register_winch(int fd,  struct tty_struct *tty);
-extern void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty);
+extern void register_winch_irq(int fd, int tty_fd, int pid,
+                               struct tty_struct *tty, unsigned long stack);
 
 #define __channel_help(fn, prefix) \
 __uml_help(fn, prefix "[0-9]*=<channel description>\n" \