From: Caleb Connolly <caleb.connolly@linaro.org>
To: caleb.connolly@linaro.org, Marcel Holtmann <marcel@holtmann.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: [PATCH v2] bluetooth: hci_event: don't print an error on vendor events
Date: Wed, 2 Mar 2022 18:35:17 +0000 [thread overview]
Message-ID: <20220302183515.448334-1-caleb.connolly@linaro.org> (raw)
Since commit 3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events"),
some devices see warnings being printed for vendor events, e.g.
[ 75.806141] Bluetooth: hci0: setting up wcn399x
[ 75.948311] Bluetooth: hci0: unexpected event 0xff length: 14 > 0
[ 75.955552] Bluetooth: hci0: QCA Product ID :0x0000000a
[ 75.961369] Bluetooth: hci0: QCA SOC Version :0x40010214
[ 75.967417] Bluetooth: hci0: QCA ROM Version :0x00000201
[ 75.973363] Bluetooth: hci0: QCA Patch Version:0x00000001
[ 76.000289] Bluetooth: hci0: QCA controller version 0x02140201
[ 76.006727] Bluetooth: hci0: QCA Downloading qca/crbtfw21.tlv
[ 76.986850] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.013574] Bluetooth: hci0: QCA Downloading qca/oneplus6/crnv21.bin
[ 77.024302] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.032681] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.040674] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.049251] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.057997] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.066320] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.075065] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.083073] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.091250] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.099417] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.110166] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.118672] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.127449] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.137190] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.146192] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.154242] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.163183] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.171202] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.179364] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.187259] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[ 77.198451] Bluetooth: hci0: QCA setup on UART is completed
Avoid printing the event length warning for vendor events, this reverts
to the previous behaviour where such warnings weren't printed.
Fixes: 3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events")
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
Changes since v1:
* Don't return early! Vendor events still get parsed despite the
warning. I should have looked a little more closely at that...
---
net/bluetooth/hci_event.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index fc30f4c03d29..9b7c9ab77971 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -6822,7 +6822,7 @@ static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
* possible to partially parse the event so leave to callback to
* decide if that is acceptable.
*/
- if (skb->len > ev->max_len)
+ if (skb->len > ev->max_len && event != HCI_EV_VENDOR)
bt_dev_warn(hdev, "unexpected event 0x%2.2x length: %u > %u",
event, skb->len, ev->max_len);
--
2.35.1
next reply other threads:[~2022-03-02 18:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-02 18:35 Caleb Connolly [this message]
2022-03-02 19:20 ` [PATCH v2] bluetooth: hci_event: don't print an error on vendor events Marcel Holtmann
2022-03-02 20:58 ` Luiz Augusto von Dentz
2022-03-03 12:37 ` Marcel Holtmann
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