From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB36CC11FF1 for ; Tue, 6 Jul 2021 12:02:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEBEA620E4 for ; Tue, 6 Jul 2021 12:02:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240283AbhGFMFU (ORCPT ); Tue, 6 Jul 2021 08:05:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:47578 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235825AbhGFLi5 (ORCPT ); Tue, 6 Jul 2021 07:38:57 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E75C461F9E; Tue, 6 Jul 2021 11:30:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625571008; bh=1sBETN6rIbaTwHUtC11AQYjCwr1sxghOp+CJdkx7l4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Lb63hGEAA/1fILhbOpP8m4IYz68j+mm8jAe5s9Ns5ZgJRbO2e0VRN9T6a5HdT+J77 wMejnBrBtf8D3puNKomO3gW5DxWE7WsLcSUHdhUA8HbSAKDonlOnkj0xtsk+NyoZtZ bqAjxAiu2Lk8dh+CT7kI2AoZzuVpDR9ZxFnzqWuznwsNIUSZidDezUelSuKOSMnWLE KNgeJABVC74GrlL80ijOzPAq2z4yPFDEdVLgURYFyna2JpyUvQq++uaIzNWNlsAu7W dMliXDQiXVkuydHGSMhEUJtSDqMuvTk0OOor3+8q6xk7/28o15DK8m++Qq6vQ9zMAG WBeACu6APw6ag== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tim Jiang , Marcel Holtmann , Sasha Levin , linux-bluetooth@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 30/31] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc. Date: Tue, 6 Jul 2021 07:29:30 -0400 Message-Id: <20210706112931.2066397-30-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706112931.2066397-1-sashal@kernel.org> References: <20210706112931.2066397-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Tim Jiang [ Upstream commit 4f00bfb372674d586c4a261bfc595cbce101fbb6 ] This is btsoc timing issue, after host start to downloading bt firmware, ep2 need time to switch from function acl to function dfu, so host add 20ms delay as workaround. Signed-off-by: Tim Jiang Signed-off-by: Marcel Holtmann Signed-off-by: Sasha Levin --- drivers/bluetooth/btusb.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 7039a58a6a4e..3d62f17111cb 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2555,6 +2555,11 @@ static int btusb_setup_qca_download_fw(struct hci_dev *hdev, sent += size; count -= size; + /* ep2 need time to switch from function acl to function dfu, + * so we add 20ms delay here. + */ + msleep(20); + while (count) { size = min_t(size_t, count, QCA_DFU_PACKET_LEN); -- 2.30.2