linux-kernel - [PATCH 4/4] platform/chrome: Make check

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Message-Id: <20200125012105.59903-5-pmalani@chromium.org>
Date:   Fri, 24 Jan 2020 17:21:09 -0800
From:   Prashant Malani <pmalani@...omium.org>
To:     enric.balletbo@...labora.com, bleung@...omium.org
Cc:     linux-kernel@...r.kernel.org,
        Prashant Malani <pmalani@...omium.org>
Subject: [PATCH 4/4] platform/chrome: Make check_features() use wrapper

Replace the use of cros_ec_cmd_xfer_status() with the new wrapper
function.

Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 drivers/platform/chrome/cros_ec_proto.c | 20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index 8ef3b7d27d260..d3540fe1b7556 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -804,31 +804,21 @@ EXPORT_SYMBOL(cros_ec_get_host_event);
  */
 int cros_ec_check_features(struct cros_ec_dev *ec, int feature)
 {
-	struct cros_ec_command *msg;
 	int ret;
 
 	if (ec->features[0] == -1U && ec->features[1] == -1U) {
 		/* features bitmap not read yet */
-		msg = kzalloc(sizeof(*msg) + sizeof(ec->features), GFP_KERNEL);
-		if (!msg)
-			return -ENOMEM;
-
-		msg->command = EC_CMD_GET_FEATURES + ec->cmd_offset;
-		msg->insize = sizeof(ec->features);
-
-		ret = cros_ec_cmd_xfer_status(ec->ec_dev, msg);
+		ret = cros_ec_send_cmd_msg(ec->ec_dev, 0,
+					   ec->cmd_offset + EC_CMD_GET_FEATURES,
+					   NULL, 0, ec->features,
+					   sizeof(ec->features));
 		if (ret < 0) {
-			dev_warn(ec->dev, "cannot get EC features: %d/%d\n",
-				 ret, msg->result);
+			dev_warn(ec->dev, "cannot get EC features: %d\n", ret);
 			memset(ec->features, 0, sizeof(ec->features));
-		} else {
-			memcpy(ec->features, msg->data, sizeof(ec->features));
 		}
 
 		dev_dbg(ec->dev, "EC features %08x %08x\n",
 			ec->features[0], ec->features[1]);
-
-		kfree(msg);
 	}
 
 	return ec->features[feature / 32] & EC_FEATURE_MASK_0(feature);
-- 
2.25.0.341.g760bfbb309-goog