1 files changed, 2 insertions, 0 deletions

diff --git a/include/clocksource/samsung_pwm.h b/include/clocksource/samsung_pwm.h
index eff8668da252..399d2414734f 100644
--- a/include/clocksource/samsung_pwm.h
+++ b/include/clocksource/samsung_pwm.h
@@ -23,6 +23,8 @@
 struct platform_device;
 struct device_node;
 
+extern spinlock_t samsung_pwm_lock;
+
 struct samsung_pwm_variant {
         u8 bits;
         u8 div_base;