[PATCH v1] Bluetooth: btusb: Fix triggering coredump implementation for QCA

From: Zijun Hu <quic_zijuhu@quicinc.com>
To: <luiz.dentz@gmail.com>, <marcel@holtmann.org>
Cc: <linux-bluetooth@vger.kernel.org>, Zijun Hu <quic_zijuhu@quicinc.com>
Subject: [PATCH v1] Bluetooth: btusb: Fix triggering coredump implementation for QCA
Date: Sun, 4 Feb 2024 13:14:19 +0800	[thread overview]
Message-ID: <1707023659-4189-1-git-send-email-quic_zijuhu@quicinc.com> (raw)

btusb_coredump_qca() uses __hci_cmd_sync() to send a vendor-specific
command to trigger firmware coredump, but the command does not have event
HCI_Command_Status or HCI_Command_Complete as its response, actually, it
does not have any sync response event at all, so it is not suitable to
use __hci_cmd_sync(), fixed by using __hci_cmd_send().

Fixes: 20981ce2d5a5 ("Bluetooth: btusb: Add WCN6855 devcoredump support")
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
---
 drivers/bluetooth/btusb.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index edfb49bbaa28..ff282cc25710 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3469,13 +3469,12 @@ static void btusb_dump_hdr_qca(struct hci_dev *hdev, struct sk_buff *skb)
 
 static void btusb_coredump_qca(struct hci_dev *hdev)
 {
+	int err;
 	static const u8 param[] = { 0x26 };
-	struct sk_buff *skb;
 
-	skb = __hci_cmd_sync(hdev, 0xfc0c, 1, param, HCI_CMD_TIMEOUT);
-	if (IS_ERR(skb))
-		bt_dev_err(hdev, "%s: triggle crash failed (%ld)", __func__, PTR_ERR(skb));
-	kfree_skb(skb);
+	err = __hci_cmd_send(hdev, 0xfc0c, 1, param);
+	if (err < 0)
+		bt_dev_err(hdev, "%s: triggle crash failed (%d)", __func__, err);
 }
 
 /*
-- 
2.7.4

