linux-kernel - [kernel PATCH v2 1/1] Bluetooth: hci_sync: Fix resuming scan after suspend resume

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Message-Id: <20220711170515.kernel.v2.1.Ia489394ab4176efa5a39ce8d08bb4c4b7bee23b9@changeid>
Date:   Mon, 11 Jul 2022 17:05:30 -0700
From:   Zhengping Jiang <jiangzp@...gle.com>
To:     linux-bluetooth@...r.kernel.org, marcel@...tmann.org
Cc:     Zhengping Jiang <jiangzp@...gle.com>,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [kernel PATCH v2 1/1] Bluetooth: hci_sync: Fix resuming scan after
 suspend resume

After resuming, remove setting scanning_paused to false, because it is
checked and set to false in hci_resume_scan_sync. Also move setting
the value to false before updating passive scan, because the value is
used when resuming passive scan.

Fixes: 3b42055388c30 (Bluetooth: hci_sync: Fix attempting to suspend with
unfiltered passive scan)

Signed-off-by: Zhengping Jiang <jiangzp@...gle.com>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
---

Changes in v2:
- Reduce title length

Changes in v1:
- Fix updating passive scan after suspend resume

 net/bluetooth/hci_sync.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 7cb3100518799..212b0cdb25f5e 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -5063,13 +5063,13 @@ static int hci_resume_scan_sync(struct hci_dev *hdev)
 	if (!hdev->scanning_paused)
 		return 0;
 
+	hdev->scanning_paused = false;
+
 	hci_update_scan_sync(hdev);
 
 	/* Reset passive scanning to normal */
 	hci_update_passive_scan_sync(hdev);
 
-	hdev->scanning_paused = false;
-
 	return 0;
 }
 
@@ -5088,7 +5088,6 @@ int hci_resume_sync(struct hci_dev *hdev)
 		return 0;
 
 	hdev->suspended = false;
-	hdev->scanning_paused = false;
 
 	/* Restore event mask */
 	hci_set_event_mask_sync(hdev);
-- 
2.37.0.144.g8ac04bfd2-goog