um: fix build without CONFIG_UML_TIME_TRAVEL_SUPPORT

When CONFIG_UML_TIME_TRAVEL_SUPPORT isn't set, the build was broken.
Fix this.

Fixes: 065038706f77 ("um: Support time travel mode")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

2 files changed, 3 insertions, 1 deletions

diff --git a/arch/um/include/shared/timer-internal.h b/arch/um/include/shared/timer-internal.h
index 5ca74f415d52..8574338bf23b 100644
--- a/arch/um/include/shared/timer-internal.h
+++ b/arch/um/include/shared/timer-internal.h
@@ -54,6 +54,8 @@ static inline void time_travel_set_timer(enum time_travel_timer_mode mode,
                                          unsigned long long expiry)
 {
 }
+
+#define time_travel_timer_mode TT_TMR_DISABLED
 #endif
 
 #endif
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index def2091697ca..67c0d1a860e9 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -213,7 +213,7 @@ static void time_travel_sleep(unsigned long long duration)
         if (time_travel_timer_mode != TT_TMR_DISABLED ||
             time_travel_timer_expiry < next) {
                 if (time_travel_timer_mode == TT_TMR_ONESHOT)
-                        time_travel_timer_mode = TT_TMR_DISABLED;
+                        time_travel_set_timer(TT_TMR_DISABLED, 0);
                 /*
                  * time_travel_time will be adjusted in the timer
                  * IRQ handler so it works even when the signal