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-rw-r--r--drivers/mailbox/mailbox-test.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mailbox/mailbox-test.c b/drivers/mailbox/mailbox-test.c
index 9c79f8019d2a..97fb956bb6e0 100644
--- a/drivers/mailbox/mailbox-test.c
+++ b/drivers/mailbox/mailbox-test.c
@@ -21,6 +21,7 @@
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
+#include <linux/sched/signal.h>
#define MBOX_MAX_SIG_LEN 8
#define MBOX_MAX_MSG_LEN 128
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