linux-kernel - [PATCH] Bluetooth: btusb: Comment on unbalanced pm reference

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Date:   Thu, 25 Jun 2020 16:26:27 -0700
From:   Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To:     marcel@...tmann.org, Oliver Neukum <oneukum@...e.com>,
        linux-bluetooth@...r.kernel.org
Cc:     chromeos-bluetooth-upstreaming@...omium.org,
        linux-pm@...r.kernel.org,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] Bluetooth: btusb: Comment on unbalanced pm reference

Add a comment clarifying that a PM reference in btusb_qca_cmd_timeout is
not unbalanced because it results in a device reset.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
---

 drivers/bluetooth/btusb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f8a71fdabb3d1b..0e143c0cecf2a1 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -581,6 +581,7 @@ static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 		return;
 
 	bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
+	/* This is not an unbalanced PM reference since the device will reset */
 	err = usb_autopm_get_interface(data->intf);
 	if (!err)
 		usb_queue_reset_device(data->intf);
-- 
2.27.0.111.gc72c7da667-goog