diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index e5f9c17..c2c32ed 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -350,8 +350,8 @@
 	return (time_ps + tick_ps - 1) / tick_ps;
 }
 
-unsigned int gpmc_clk_ticks_to_ns(unsigned ticks, int cs,
-				  enum gpmc_clk_domain cd)
+static unsigned int gpmc_clk_ticks_to_ns(unsigned int ticks, int cs,
+					 enum gpmc_clk_domain cd)
 {
 	return ticks * gpmc_get_clk_period(cs, cd) / 1000;
 }