Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / include / linux / mfd / cros_ec.h

diff --git a/kernel/include/linux/mfd/cros_ec.h b/kernel/include/linux/mfd/cros_ec.h
index 494682c..3ab3ced 100644 (file)
--- a/kernel/include/linux/mfd/cros_ec.h
+++ b/kernel/include/linux/mfd/cros_ec.h
@@ -223,6 +223,21 @@ int cros_ec_check_result(struct cros_ec_device *ec_dev,
 int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
                     struct cros_ec_command *msg);
 
+/**
+ * cros_ec_cmd_xfer_status - Send a command to the ChromeOS EC
+ *
+ * This function is identical to cros_ec_cmd_xfer, except it returns success
+ * status only if both the command was transmitted successfully and the EC
+ * replied with success status. It's not necessary to check msg->result when
+ * using this function.
+ *
+ * @ec_dev: EC device
+ * @msg: Message to write
+ * @return: Num. of bytes transferred on success, <0 on failure
+ */
+int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
+                           struct cros_ec_command *msg);
+
 /**
  * cros_ec_remove - Remove a ChromeOS EC
  *