1 files changed, 4 insertions, 12 deletions

diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c
index 3788d4568d33..7555bf9c33d9 100644
--- a/arch/um/os-Linux/irq.c
+++ b/arch/um/os-Linux/irq.c
@@ -52,11 +52,6 @@ int os_waiting_for_events(struct irq_fd *active_fds)
         return n;
 }
 
-int os_isatty(int fd)
-{
-        return isatty(fd);
-}
-
 int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds)
 {
         if (pollfds_num == pollfds_size) {
@@ -142,17 +137,14 @@ void os_set_ioignore(void)
 
 void init_irq_signals(int on_sigstack)
 {
-        __sighandler_t h;
         int flags;
 
         flags = on_sigstack ? SA_ONSTACK : 0;
-        if (timer_irq_inited)
-                h = (__sighandler_t)alarm_handler;
-        else
-                h = boot_timer_handler;
 
-        set_handler(SIGVTALRM, h, flags | SA_RESTART,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGALRM, -1);
+        set_handler(SIGVTALRM, (__sighandler_t) alarm_handler,
+                    flags | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, -1);
+        set_handler(SIGALRM, (__sighandler_t) alarm_handler,
+                    flags | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, -1);
         set_handler(SIGIO, (__sighandler_t) sig_handler, flags | SA_RESTART,
                     SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
         signal(SIGWINCH, SIG_IGN);