diff --git a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
index 7b8be5293883..bf3fe7c61be5 100644
--- a/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
+++ b/drivers/staging/clocking-wizard/clk-xlnx-clock-wizard.c
@@ -68,7 +68,7 @@ struct clk_wzrd {
 	struct clk *axi_clk;
 	struct clk *clks_internal[wzrd_clk_int_max];
 	struct clk *clkout[WZRD_NUM_OUTPUTS];
-	int speed_grade;
+	unsigned int speed_grade;
 	bool suspended;
 };