linux-kernel - [PATCH 05/17] platform/chrome: sensorhub: Use send_cmd

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Date:   Thu, 30 Jan 2020 12:30:42 -0800
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Prashant Malani <pmalani@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>
Subject: [PATCH 05/17] platform/chrome: sensorhub: Use send_cmd_msg()

Update the register() function to use the new
cros_ec_send_cmd_msg() function instead of cros_ec_cmd_xfer_status().

Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 drivers/platform/chrome/cros_ec_sensorhub.c | 29 +++++++++------------
 1 file changed, 12 insertions(+), 17 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_sensorhub.c b/drivers/platform/chrome/cros_ec_sensorhub.c
index 04d8879689e985..8a05e7f5a71b2d 100644
--- a/drivers/platform/chrome/cros_ec_sensorhub.c
+++ b/drivers/platform/chrome/cros_ec_sensorhub.c
@@ -54,7 +54,7 @@ static int cros_ec_sensorhub_register(struct device *dev,
 	struct cros_ec_dev *ec = sensorhub->ec;
 	struct ec_params_motion_sense *params;
 	struct ec_response_motion_sense *resp;
-	struct cros_ec_command *msg;
+	void *ec_buf;
 	int ret, i, sensor_num;
 	char *name;
 
@@ -71,27 +71,23 @@ static int cros_ec_sensorhub_register(struct device *dev,
 		return -EINVAL;
 	}
 
-	/* Prepare a message to send INFO command to each sensor. */
-	msg = kzalloc(sizeof(*msg) + max(sizeof(*params), sizeof(*resp)),
-		      GFP_KERNEL);
-	if (!msg)
+	ec_buf = kzalloc(max(sizeof(*params), sizeof(*resp)), GFP_KERNEL);
+	if (!ec_buf)
 		return -ENOMEM;
 
-	msg->version = 1;
-	msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset;
-	msg->outsize = sizeof(*params);
-	msg->insize = sizeof(*resp);
-	params = (struct ec_params_motion_sense *)msg->data;
-	resp = (struct ec_response_motion_sense *)msg->data;
+	params = ec_buf;
+	resp = ec_buf;
 
 	for (i = 0; i < sensor_num; i++) {
 		params->cmd = MOTIONSENSE_CMD_INFO;
 		params->info.sensor_num = i;
 
-		ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg);
+		ret = cros_ec_send_cmd_msg(ec->ec_dev, 1,
+				EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset,
+				params, sizeof(*params), resp, sizeof(*resp));
 		if (ret < 0) {
-			dev_warn(dev, "no info for EC sensor %d : %d/%d\n",
-				 i, ret, msg->result);
+			dev_warn(dev, "no info for EC sensor %d : %d\n",
+				 i, ret);
 			continue;
 		}
 
@@ -141,11 +137,10 @@ static int cros_ec_sensorhub_register(struct device *dev,
 			goto error;
 	}
 
-	kfree(msg);
-	return 0;
+	ret =  0;
 
 error:
-	kfree(msg);
+	kfree(ec_buf);
 	return ret;
 }
 
-- 
2.25.0.341.g760bfbb309-goog