linux-kernel - [PATCH v9 07/16] mei: gsc: wait for reset thread on stop

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Message-Id: <20220907215113.1596567-8-tomas.winkler@intel.com>
Date:   Thu,  8 Sep 2022 00:51:04 +0300
From:   Tomas Winkler <tomas.winkler@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Tomas Winkler <tomas.winkler@...el.com>,
        Alexander Usyskin <alexander.usyskin@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>,
        Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
Subject: [PATCH v9 07/16] mei: gsc: wait for reset thread on stop

From: Alexander Usyskin <alexander.usyskin@...el.com>

Wait for reset work to complete before initiating
stop reset flow sequence.

Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
---
V9: Rebase

 drivers/misc/mei/init.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index eb052005ca86..bc054baf496c 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2012-2019, Intel Corporation. All rights reserved.
+ * Copyright (c) 2012-2022, Intel Corporation. All rights reserved.
  * Intel Management Engine Interface (Intel MEI) Linux driver
  */
 
@@ -320,6 +320,8 @@ void mei_stop(struct mei_device *dev)
 
 	mei_clear_interrupts(dev);
 	mei_synchronize_irq(dev);
+	/* to catch HW-initiated reset */
+	mei_cancel_work(dev);
 
 	mutex_lock(&dev->device_lock);
 
-- 
2.37.2