From mboxrd@z Thu Jan 1 00:00:00 1970 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 666591C08 for ; Wed, 28 Dec 2022 16:44:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D7F9BC433D2; Wed, 28 Dec 2022 16:44:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672245899; bh=V1iZjnY+Fu3/ryfiijjX5kukUbPZuFNdU84KcYkm+K4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h/G9zy2Lo5ayum8U1bnySTAYV4O3Iq7a1K04if+wDtpirWyBWkcyXmIwc5nDCsoOE 0YQXCsiQgvGvRQ3fVVhv0jyvkDyNYsX3MxjvbzO7blvovL/A5mbvxpKvszAdJhTzgO XcjOfBGA3WqxL0dRMV8w5Ebx9JxAj4lhkd7+uH0w= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sven Peter , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 6.0 0977/1073] Bluetooth: Add quirk to disable MWS Transport Configuration Date: Wed, 28 Dec 2022 15:42:45 +0100 Message-Id: <20221228144354.611474083@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144328.162723588@linuxfoundation.org> References: <20221228144328.162723588@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Sven Peter [ Upstream commit ffcb0a445ec2d5753751437706aa0a7ea8351099 ] Broadcom 4378/4387 controllers found in Apple Silicon Macs claim to support getting MWS Transport Layer Configuration, < HCI Command: Read Local Supported... (0x04|0x0002) plen 0 > HCI Event: Command Complete (0x0e) plen 68 Read Local Supported Commands (0x04|0x0002) ncmd 1 Status: Success (0x00) [...] Get MWS Transport Layer Configuration (Octet 30 - Bit 3)] [...] , but then don't actually allow the required command: > HCI Event: Command Complete (0x0e) plen 15 Get MWS Transport Layer Configuration (0x05|0x000c) ncmd 1 Status: Command Disallowed (0x0c) Number of transports: 0 Baud rate list: 0 entries 00 00 00 00 00 00 00 00 00 00 Signed-off-by: Sven Peter Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- include/net/bluetooth/hci.h | 10 ++++++++++ include/net/bluetooth/hci_core.h | 3 +++ net/bluetooth/hci_sync.c | 2 +- 3 files changed, 14 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 78c55b69919d..dd455ce06770 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -284,6 +284,16 @@ enum { * during the hdev->setup vendor callback. */ HCI_QUIRK_BROKEN_EXT_SCAN, + + /* + * When this quirk is set, the HCI_OP_GET_MWS_TRANSPORT_CONFIG command is + * disabled. This is required for some Broadcom controllers which + * erroneously claim to support MWS Transport Layer Configuration. + * + * This quirk can be set before hci_register_dev is called or + * during the hdev->setup vendor callback. + */ + HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, }; /* HCI device flags */ diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 29d1254f9856..6afb4771ce35 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1711,6 +1711,9 @@ void hci_conn_del_sysfs(struct hci_conn *conn); ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) +#define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ + (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) + /* ----- HCI protocols ----- */ #define HCI_PROTO_DEFER 0x01 diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index a5e89e1b5452..117537f3e7ad 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -3940,7 +3940,7 @@ static int hci_read_local_pairing_opts_sync(struct hci_dev *hdev) /* Get MWS transport configuration if the HCI command is supported */ static int hci_get_mws_transport_config_sync(struct hci_dev *hdev) { - if (!(hdev->commands[30] & 0x08)) + if (!mws_transport_config_capable(hdev)) return 0; return __hci_cmd_sync_status(hdev, HCI_OP_GET_MWS_TRANSPORT_CONFIG, -- 2.35.1