linux-kernel - [PATCH] Bluetooth: hci_sync: Fix Opcode prints in bt_dev

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Message-Id: <20231018144735.33085-1-marcel@ziswiler.com>
Date:   Wed, 18 Oct 2023 16:47:35 +0200
From:   Marcel Ziswiler <marcel@...wiler.com>
To:     linux-bluetooth@...r.kernel.org
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-kernel@...r.kernel.org,
        Johan Hedberg <johan.hedberg@...il.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>
Subject: [PATCH] Bluetooth: hci_sync: Fix Opcode prints in bt_dev_dbg/err

From: Marcel Ziswiler <marcel.ziswiler@...adex.com>

Printed Opcodes may be missing leading zeros:

	Bluetooth: hci0: Opcode 0x c03 failed: -110

Fix this by always printing leading zeros:

	Bluetooth: hci0: Opcode 0x0c03 failed: -110

Fixes: d0b137062b2d ("Bluetooth: hci_sync: Rework init stages")
Fixes: 6a98e3836fa2 ("Bluetooth: Add helper for serialized HCI command execution")

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>

---

 net/bluetooth/hci_sync.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index d06e07a0ea5a..2c782b6a274d 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -152,7 +152,7 @@ struct sk_buff *__hci_cmd_sync_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
 	struct sk_buff *skb;
 	int err = 0;
 
-	bt_dev_dbg(hdev, "Opcode 0x%4x", opcode);
+	bt_dev_dbg(hdev, "Opcode 0x%4.4x", opcode);
 
 	hci_req_init(&req, hdev);
 
@@ -248,7 +248,7 @@ int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
 	skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk);
 	if (IS_ERR(skb)) {
 		if (!event)
-			bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
+			bt_dev_err(hdev, "Opcode 0x%4.4x failed: %ld", opcode,
 				   PTR_ERR(skb));
 		return PTR_ERR(skb);
 	}
-- 
2.36.1