linux-kernel - [PATCH 2/2] Bluetooth: Allow SCO packets regardless of hci_conn

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Message-ID: <20250121151532.2.I6e9e94dcded65e4a9ed42ad23ca8a5d81f680382@changeid>
Date: Tue, 21 Jan 2025 15:15:34 +0800
From: Hsin-chen Chuang <chharry@...gle.com>
To: linux-bluetooth@...r.kernel.org, luiz.dentz@...il.com
Cc: chromeos-bluetooth-upstreaming@...omium.org, 
	Hsin-chen Chuang <chharry@...omium.org>, Marcel Holtmann <marcel@...tmann.org>, 
	Ying Hsu <yinghsu@...omium.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] Bluetooth: Allow SCO packets regardless of hci_conn_num

From: Hsin-chen Chuang <chharry@...omium.org>

The SCO packets from Bluetooth raw socket are now rejected because
hci_conn_num is left 0. This patch allows such the usecase to enable
the userspace SCO support.

Fixes: b16b327edb4d ("Bluetooth: btusb: add sysfs attribute to control USB alt setting")
Signed-off-by: Hsin-chen Chuang <chharry@...omium.org>
---

 drivers/bluetooth/btusb.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f419d0827ee4..3e2d7ea6de5c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2107,9 +2107,6 @@ static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 		return submit_or_queue_tx_urb(hdev, urb);
 
 	case HCI_SCODATA_PKT:
-		if (hci_conn_num(hdev, SCO_LINK) < 1)
-			return -ENODEV;
-
 		urb = alloc_isoc_urb(hdev, skb);
 		if (IS_ERR(urb))
 			return PTR_ERR(urb);
@@ -2588,9 +2585,6 @@ static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
 		return submit_or_queue_tx_urb(hdev, urb);
 
 	case HCI_SCODATA_PKT:
-		if (hci_conn_num(hdev, SCO_LINK) < 1)
-			return -ENODEV;
-
 		urb = alloc_isoc_urb(hdev, skb);
 		if (IS_ERR(urb))
 			return PTR_ERR(urb);
-- 
2.48.0.rc2.279.g1de40edade-goog