1 files changed, 2 insertions, 2 deletions

diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 583b8e137c33..96f3a477c95e 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -168,7 +168,7 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out)
                 printk("winch_tramp : failed to read synchronization byte\n");
                 printk("read failed, err = %d\n", -n);
                 printk("fd %d will not support SIGWINCH\n", fd);
-                *fd_out = -1;
+                pid = -1;
         }
         return(pid);
 }
@@ -186,7 +186,7 @@ void register_winch(int fd, struct tty_struct *tty)
         if(!CHOOSE_MODE_PROC(is_tracer_winch, is_skas_winch, pid, fd,
                              tty) && (pid == -1)){
                 thread = winch_tramp(fd, tty, &thread_fd);
-                if(fd != -1){
+                if(thread > 0){
                         register_winch_irq(thread_fd, fd, thread, tty);
 
                         count = os_write_file(thread_fd, &c, sizeof(c));