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Diffstat (limited to 'drivers/platform/chrome/cros_ec_proto.c')
-rw-r--r--drivers/platform/chrome/cros_ec_proto.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index 945b1b15a0..f8242b8dda 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -805,9 +805,11 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev,
if (ret == -ENOPROTOOPT) {
dev_dbg(ec_dev->dev,
"GET_NEXT_EVENT returned invalid version error.\n");
+ mutex_lock(&ec_dev->lock);
ret = cros_ec_get_host_command_version_mask(ec_dev,
EC_CMD_GET_NEXT_EVENT,
&ver_mask);
+ mutex_unlock(&ec_dev->lock);
if (ret < 0 || ver_mask == 0)
/*
* Do not change the MKBP supported version if we can't