Change in coreboot[master]: ec: check to see if s0ix is enabled

[Paul Moy (Code Review)]

Paul Moy has uploaded this change for review. ( https://review.coreboot.org/28610

Change subject: ec: check to see if s0ix is enabled
......................................................................

ec: check to see if s0ix is enabled

Before trying to set the s0ix lazy wake up mask in the EC, added
a check to make sure s0ix is enabled.

Change-Id: I78896ffe6312409c9f241b3b3224169c188bb265
Signed-off-by: Paul Moy 
---
M src/ec/google/chromeec/ec.c
1 file changed, 5 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/10/28610/1

diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index 449eaf3..e094e9a 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -312,7 +312,11 @@
    	printk(BIOS_DEBUG, "Error: Set S5 LAZY WAKE mask failed\n");
    if (google_chromeec_set_s3_lazy_wake_mask(s3_mask))
    	printk(BIOS_DEBUG, "Error: Set S3 LAZY WAKE mask failed\n");
-	if (google_chromeec_set_s0ix_lazy_wake_mask(s0ix_mask))
+	/*
+	 * Only set the s0ix lazy wake mask if the mask is nonzero. A mask
+	 * of zero means that s0ix is not enabled on the platform.
+	 */
+	if (s0ix_mask && google_chromeec_set_s0ix_lazy_wake_mask(s0ix_mask))
    	printk(BIOS_DEBUG, "Error: Set S0iX LAZY WAKE mask failed\n");
 }