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

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Message-Id: <20210211193221.610867-1-pmalani@chromium.org>
Date:   Thu, 11 Feb 2021 11:32:21 -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] platform/chrome: cros_ec_typec: Flush pending work

When a PD notifier event arrives, a new work event won't be enqueued if
the current one hasn't completed. This could lead to dropped events.

So, flush any pending work before scheduling the new instance.

Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 drivers/platform/chrome/cros_ec_typec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index db83c03ae5cd..2fac95e7a455 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -1031,6 +1031,7 @@ static int cros_ec_typec_event(struct notifier_block *nb,
 {
 	struct cros_typec_data *typec = container_of(nb, struct cros_typec_data, nb);
 
+	flush_work(&typec->port_work);
 	schedule_work(&typec->port_work);
 
 	return NOTIFY_OK;
-- 
2.30.0.478.g8a0d178c01-goog