From 2db6fbc47b1070a40f5c9b00f6ac9957ca8a4199 Mon Sep 17 00:00:00 2001
From: Lijian Zhao <lijian.zhao@intel.com>
Date: Thu, 8 Feb 2018 12:57:01 -0800
Subject: chromeec: Fix ACPI compile warning

For system without secondary battery, current DSDT will report warning
during build time. Add a conditional check to make sure only battery
index 0 can return success.

TEST=Build pass.

Change-Id: Iae12c5d1aa749948ef4025c8b5e60c97e1b747a5
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/23661
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
---
 src/ec/google/chromeec/acpi/battery.asl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ec/google/chromeec/acpi/battery.asl b/src/ec/google/chromeec/acpi/battery.asl
index 18b612db2a..d8056b03b2 100644
--- a/src/ec/google/chromeec/acpi/battery.asl
+++ b/src/ec/google/chromeec/acpi/battery.asl
@@ -42,6 +42,10 @@ Method (BTSW, 1)
 			Return (One)
 		}
 	}
+#else
+	If (LNotEqual (0, Arg0)) {
+		Return (One)
+	}
 #endif
 	Return (Zero)
 }
-- 
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