linux-kernel - [PATCH v3 2/2] platform/chrome: cros_ec

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Message-ID: <20241206091514.2538350-3-dawidn@google.com>
Date: Fri,  6 Dec 2024 09:15:14 +0000
From: Dawid Niedzwiecki <dawidn@...gle.com>
To: Tzung-Bi Shih <tzungbi@...nel.org>, Benson Leung <bleung@...omium.org>
Cc: chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	chromeos-krk-upstreaming@...gle.com, Dawid Niedzwiecki <dawidn@...gle.com>
Subject: [PATCH v3 2/2] platform/chrome: cros_ec_proto: remove unnecessary retries

Remove the retry of the get protocol info command. It is not needed
anymore, because RWSIG continue command is send before start of the
probing. That assures the EC device is ready in RW and there is no
need to try again because FPMCU is not fully booted.

Signed-off-by: Dawid Niedzwiecki <dawidn@...gle.com>
---
 drivers/platform/chrome/cros_ec_proto.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index ed3623b54bc3..877b107fee4b 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -366,15 +366,6 @@ static int cros_ec_get_proto_info(struct cros_ec_device *ec_dev, int devidx)
 	msg->insize = sizeof(*info);
 
 	ret = cros_ec_send_command(ec_dev, msg);
-	/*
-	 * Send command once again when timeout occurred.
-	 * Fingerprint MCU (FPMCU) is restarted during system boot which
-	 * introduces small window in which FPMCU won't respond for any
-	 * messages sent by kernel. There is no need to wait before next
-	 * attempt because we waited at least EC_MSG_DEADLINE_MS.
-	 */
-	if (ret == -ETIMEDOUT)
-		ret = cros_ec_send_command(ec_dev, msg);
 
 	if (ret < 0) {
 		dev_dbg(ec_dev->dev,
-- 
2.47.0.338.g60cca15819-goog