diff --git a/[refs] b/[refs]
index 8edcef3cd1c2..dcdc5f49be09 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 210183d4af87cc70d7e4552d325f238734cade15
+refs/heads/master: 5cf4c07a2805388b5645079039d9a8b4b9269e08
diff --git a/trunk/drivers/platform/x86/acerhdf.c b/trunk/drivers/platform/x86/acerhdf.c
index 9226838c867f..6abd3f15dd85 100644
--- a/trunk/drivers/platform/x86/acerhdf.c
+++ b/trunk/drivers/platform/x86/acerhdf.c
@@ -524,6 +524,10 @@ static int acerhdf_check_hardware(void)
 	version = dmi_get_system_info(DMI_BIOS_VERSION);
 	product = dmi_get_system_info(DMI_PRODUCT_NAME);
 
+	if (!vendor || !version || !product) {
+		pr_err("error getting hardware information\n");
+		return -EINVAL;
+	}
 
 	pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER);