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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Abhishek Pandit-Subedi <abhishekpandit@chromium.org>,
        Marcel Holtmann <marcel@holtmann.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.8 212/633] Bluetooth: Re-order clearing suspend tasks
Date:   Tue, 27 Oct 2020 14:49:15 +0100
Message-Id: <20201027135532.626926027@linuxfoundation.org>
In-Reply-To: <20201027135522.655719020@linuxfoundation.org>
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From: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>

[ Upstream commit 3eec158d5eca7dd455118d9e00568aad2371219f ]

Unregister_pm_notifier is a blocking call so suspend tasks should be
cleared beforehand. Otherwise, the notifier will wait for completion
before returning (and we encounter a 2s timeout on resume).

Fixes: 0e9952804ec9c8 (Bluetooth: Clear suspend tasks on unregister)
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/hci_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 0f4e5a31f983c..131d29e902a30 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3618,8 +3618,8 @@ void hci_unregister_dev(struct hci_dev *hdev)
 
 	cancel_work_sync(&hdev->power_on);
 
-	unregister_pm_notifier(&hdev->suspend_notifier);
 	hci_suspend_clear_tasks(hdev);
+	unregister_pm_notifier(&hdev->suspend_notifier);
 	cancel_work_sync(&hdev->suspend_prepare);
 
 	hci_dev_do_close(hdev);
-- 
2.25.1