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-rw-r--r--drivers/char/riscom8.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 217660451237..171711acf5cd 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -47,6 +47,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/tty_flip.h>
+#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/device.h>
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