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-rw-r--r--drivers/isdn/mISDN/timerdev.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/isdn/mISDN/timerdev.c b/drivers/isdn/mISDN/timerdev.c
index 9438d7ec3308..b1e135fc1fb5 100644
--- a/drivers/isdn/mISDN/timerdev.c
+++ b/drivers/isdn/mISDN/timerdev.c
@@ -25,6 +25,8 @@
#include <linux/module.h>
#include <linux/mISDNif.h>
#include <linux/mutex.h>
+#include <linux/sched/signal.h>
+
#include "core.h"
static DEFINE_MUTEX(mISDN_mutex);