From nobody Sat Sep 26 02:34:30 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D701517BD7; Fri, 4 Sep 2026 22:24:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788560667; cv=none; b=u1fMUNwbl3kl1cRxc29OtM5kEZCRSlvpyIKz6dqOfeW/0B+kvZx8nlab6yAXlvXj+kkKcgdjgxn6ODf373k+/KVVlf6hogWABas2hFB7X7wWoHIBWqthA4z9YqT8XSDXd3Bcc7XapDpzL0cOlHkDqR0Hx/cWSWGEDSvITAeCmqY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788560667; c=relaxed/simple; bh=PrXupIGMK36s5D6PfG/qC2pq3ZiMWYmQ2f6ItmTVBLs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=IM4PD+KXoHYXHFdnBMRCZd8O1uaf7RenIjnnIudUtErHr479xHF02Mde+DSzxL5C1ixSR7Uz6gbHWKPk20iFxUJzOBXWbKi4vcq/3wA/lhHMYVPLlqduJbb48LKwSS74QDDqN+TneqOGv4oMVkrI2u51MruqNdiz6Sywy/Xwda0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=siWQlGe2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="siWQlGe2" Received: by smtp.kernel.org (Postfix) with ESMTPS id E454CC2BCC7; Fri, 4 Sep 2026 22:24:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1788560666; bh=PrXupIGMK36s5D6PfG/qC2pq3ZiMWYmQ2f6ItmTVBLs=; h=From:Date:Subject:To:Cc:Reply-To:From; b=siWQlGe2kpxsavF2YDYo/YUwVsJUsKh1Yiey+HhJm/ZjsNY3USKNSmAPlg5rH460V 9gzwQNsqKnQ6ZUjmKoktEnGWTwkqREPXPtszX1HYr51Q1zd1xWzOjhO/HLhy6HwR2M TV0WIZmoBV9OWVbAEZG6ea0qqrIjQLo5YV8215TDmesy1CX/ZZS0Ush6nizoK+nUdW Dm8nWQ5MoiLc2obFmmu0bf8Ksv6WUcRqHmasWta0Tw4dtZPeZAgBYfvzEq54ayUJzV 2QxCR/v60HUIxE+OOuBEcERls06OTVN+Klat/sFteDCNlOHXUwagWzfc7uzOAjsFSB 2WINuZGRdnDvA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id C05FAC624D3; Fri, 4 Sep 2026 22:24:26 +0000 (UTC) From: Johann Fischer via B4 Relay Date: Sat, 05 Sep 2026 00:24:08 +0200 Subject: [PATCH] Bluetooth: btusb: do not probe non-HCI interfaces Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260905-btusb-skip-non-hci-ifaces-v1-1-32dda494122f@nordicsemi.no> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/yXMTQqDMBBA4avIrB1Igz+1VxEXmXSsUyFKRkUQ7 25sl9/ivQOUo7DCKzsg8iYqU0h45Bn4wYUPo7yTwRpbmcYUSMuqhDrKjGEKOHhB6Z1nRSotO9s 8q7omSP0cuZf99267v3WlL/vlHsJ5XnnktPR9AAAA X-Change-ID: 20260904-btusb-skip-non-hci-ifaces-b52ea298677b To: Marcel Holtmann , Luiz Augusto von Dentz Cc: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Johann Fischer X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1109; i=johann.fischer@nordicsemi.no; h=from:subject:message-id; bh=N9bMTaAocKK1v8xDH8TgTymZY5ojzij51J8enWGWLwY=; b=owEBbQKS/ZANAwAKAYSE5whenKmxAcsmYgBqm0UZ9dRRF5Qie8QtQ3kv0opJyLtOVGhp78COk rMYHFv7SfyJAjMEAAEKAB0WIQRX82HLlVW1Jm9YMr+EhOcIXpypsQUCaptFGQAKCRCEhOcIXpyp seC/EACvELEj4cxv8kO2tR9jfXdVyszVPCZ8e+4YQdBtTrUcroSwb8Wp9J9JmrdkIQsTrs93Uyp P4QG64asNL+z1uuAwdi1HwQBGVlNUFzTmTVRLhC2U1GQYoapmtWDI7L3xbhvW1jhynxbZFPHIqO KnV0xYoGj4oOSDHWmMyY/HESTqKQHY9m4thSDjze6eg0xK/CjHMZep6Z8azi84oXhcAm2Ums8Fc +VeAU81ERiprydS0gEanuzXrGaznZC7Ygmn1/LfJkAbOA+ZZh3G0SaYugNuuGf4EyriAnIT4V/a uohIlY3w1q5wAZ5jM9g85G5KiI3VtWejxaNj4LXebwOCM4XpkA1eWN2+r9iwfDFadx6fkHUrXSV r7/9yNcIR8WH19pSoDFNuhuxg9cn3R4bt9XaUbE55jdQ8wCKChslEFoNa64ZOM43WItuWc2gqCc /pYrb2QTa+WtYwokE65bs05EuoiGZeHqcDFjtpgIGBXPiMdzP0gKqafCSuxZd0IK0pj0L8cq68x eDHXVpqU4yMKC5oR22sF4URK5gcUxuc77509y7MLqqjRNUi9ZSXFk0yILSKSVpykWPouASy7kIK aJJEWyovgqKZtq/bLtVgPHYoi1tNS1PRfUFCRQFvJbrc1V0geNs65754B101kzfNHj57LSxQwBp PmMZaJMpL9RUdkQ== X-Developer-Key: i=johann.fischer@nordicsemi.no; a=openpgp; fpr=57F361CB9555B5266F5832BF8484E7085E9CA9B1 X-Endpoint-Received: by B4 Relay for johann.fischer@nordicsemi.no/default with auth_id=1003 X-Original-From: Johann Fischer Reply-To: johann.fischer@nordicsemi.no From: Johann Fischer If the driver selects BTUSB_PROTO_H4, the second interface (voice channels) remains unclaimed. Then, the btusb_probe() is called for the second interface. It misidentifies the interface as one that supports legacy mode and fails with "failed to enumerate endpoints". Signed-off-by: Johann Fischer --- drivers/bluetooth/btusb.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index dfefb43fb792..44f0db347643 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -4293,6 +4293,11 @@ static int btusb_probe(struct usb_interface *intf, return -ENODEV; } =20 + /* Skip interfaces that do not implement the HCI transport */ + if (usb_find_common_endpoints(intf->cur_altsetting, + &bulk_rx_ep, &bulk_tx_ep, &intr_ep, NULL)) + return -ENODEV; + data =3D kzalloc_obj(*data); if (!data) return -ENOMEM; --- base-commit: 88a8184cb44c8952e6a6fd21e250445300d1c7aa change-id: 20260904-btusb-skip-non-hci-ifaces-b52ea298677b Best regards, -- =20 Johann