From 9798ac6d32c1a32d6d92d853ff507d2d39c4300c Mon Sep 17 00:00:00 2001 From: Tomeu Vizoso Date: Fri, 15 Jul 2016 16:28:41 -0700 Subject: mfd: cros_ec: Add cros_ec_cmd_xfer_status() helper So that callers of cros_ec_cmd_xfer() don't have to repeat boilerplate code when checking for errors from the EC side. Signed-off-by: Tomeu Vizoso Reviewed-by: Benson Leung Signed-off-by: Brian Norris Acked-by: Lee Jones Tested-by: Enric Balletbo i Serra Signed-off-by: Thierry Reding --- include/linux/mfd/cros_ec.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux/mfd/cros_ec.h') diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h index 64184d27e3cd..d641a18abacb 100644 --- a/include/linux/mfd/cros_ec.h +++ b/include/linux/mfd/cros_ec.h @@ -225,6 +225,21 @@ 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 * -- cgit v1.2.1