diff --git a/drivers/ide/palm_bk3710.c b/drivers/ide/palm_bk3710.c
index 8012e43..46427ea 100644
--- a/drivers/ide/palm_bk3710.c
+++ b/drivers/ide/palm_bk3710.c
@@ -325,6 +325,8 @@
 
 	clk_enable(clk);
 	rate = clk_get_rate(clk);
+	if (!rate)
+		return -EINVAL;
 
 	/* NOTE:  round *down* to meet minimum timings; we count in clocks */
 	ideclk_period = 1000000000UL / rate;