Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756884AbaKRPVS (ORCPT ); Tue, 18 Nov 2014 10:21:18 -0500 Received: from cantor2.suse.de ([195.135.220.15]:57041 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754875AbaKROJ2 (ORCPT ); Tue, 18 Nov 2014 09:09:28 -0500 From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Marcel Holtmann , Johan Hedberg , Jiri Slaby Subject: [PATCH 3.12 024/206] Bluetooth: Handle Intel USB bootloader with buggy interrupt Date: Tue, 18 Nov 2014 15:06:19 +0100 Message-Id: <35aaf24b19442db101a7fe7dbc9030a12203e3fa.1416319692.git.jslaby@suse.cz> X-Mailer: git-send-email 2.1.3 In-Reply-To: <28f04bcc068a44c5641c727883947960fb8dcbd5.1416319692.git.jslaby@suse.cz> References: <28f04bcc068a44c5641c727883947960fb8dcbd5.1416319692.git.jslaby@suse.cz> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marcel Holtmann 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit 3a5ef20c979c0f33b6fb2582d04957397a6bf51f upstream. The interrupt interface for the Intel USB bootloader devices is only enabled after receiving SetInterface(0, AltSetting=0). When this USB command is not send, then no HCI events will be received. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg Signed-off-by: Jiri Slaby --- drivers/bluetooth/btusb.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 4e86b93b90f0..27dd68362639 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1495,6 +1495,18 @@ static int btusb_probe(struct usb_interface *intf, data->isoc = NULL; } + if (id->driver_info & BTUSB_INTEL_BOOT) { + /* A bug in the bootloader causes that interrupt interface is + * only enabled after receiving SetInterface(0, AltSetting=0). + */ + err = usb_set_interface(data->udev, 0, 0); + if (err < 0) { + BT_ERR("failed to set interface 0, alt 0 %d", err); + hci_free_dev(hdev); + return err; + } + } + if (data->isoc) { err = usb_driver_claim_interface(&btusb_driver, data->isoc, data); -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/