diff --git a/arch/arm/mach-rk2818/devices.c b/arch/arm/mach-rk2818/devices.c
old mode 100644
new mode 100755
index d4a241da5831..5f386acc8909
--- a/arch/arm/mach-rk2818/devices.c
+++ b/arch/arm/mach-rk2818/devices.c
@@ -625,7 +625,7 @@ struct platform_device android_usb_device = {
 };
 
 static struct usb_mass_storage_platform_data mass_storage_pdata = {
-	.nluns		= 2,
+	.nluns		= 1,
 	.vendor		= "RockChip",
 	.product	= "rk2818 sdk",
 	.release	= 0x0100,