Input: cros_ec_keyb - use cros_ec_cmd_xfer_status helper

This patch makes use of cros_ec_cmd_xfer_status() instead of
cros_ec_cmd_xfer(). In this case there is no advantage of doing this
apart from that we want to make cros_ec_cmd_xfer() a private function
for the EC protocol and let people only use the
cros_ec_cmd_xfer_status() to return Linux standard error codes.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20200414210434.1534982-1-enric.balletbo@collabora.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index 2b71c5a..fc1793c 100644 (file)
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -347,18 +347,14 @@ static int cros_ec_keyb_info(struct cros_ec_device *ec_dev,
        params->info_type = info_type;
        params->event_type = event_type;
 
-       ret = cros_ec_cmd_xfer(ec_dev, msg);
-       if (ret < 0) {
-               dev_warn(ec_dev->dev, "Transfer error %d/%d: %d\n",
-                        (int)info_type, (int)event_type, ret);
-       } else if (msg->result == EC_RES_INVALID_VERSION) {
+       ret = cros_ec_cmd_xfer_status(ec_dev, msg);
+       if (ret == -ENOTSUPP) {
                /* With older ECs we just return 0 for everything */
                memset(result, 0, result_size);
                ret = 0;
-       } else if (msg->result != EC_RES_SUCCESS) {
-               dev_warn(ec_dev->dev, "Error getting info %d/%d: %d\n",
-                        (int)info_type, (int)event_type, msg->result);
-               ret = -EPROTO;
+       } else if (ret < 0) {
+               dev_warn(ec_dev->dev, "Transfer error %d/%d: %d\n",
+                        (int)info_type, (int)event_type, ret);
        } else if (ret != result_size) {
                dev_warn(ec_dev->dev, "Wrong size %d/%d: %d != %zu\n",
                         (int)info_type, (int)event_type,