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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 B703FC11F6C for ; Tue, 6 Jul 2021 12:02:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9FDF5620DB for ; Tue, 6 Jul 2021 12:02:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238289AbhGFMF3 (ORCPT ); Tue, 6 Jul 2021 08:05:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:47600 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236951AbhGFLfs (ORCPT ); Tue, 6 Jul 2021 07:35:48 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F09CE61C5C; Tue, 6 Jul 2021 11:24:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625570691; bh=weH4CNkH3qClIGicJA8ZV2exCFsK3zq5d/yVwQmLTII=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lfGbyRz4qEcLJFYLyQVKvS/M8QaNj8YRj/MHvGGDSezmg/+tSnZ1cDRLtSF9ZHtYD MLOUxfkxIIgiK77OH0IFoMVJeSeSr8DaGKDC1+SpLjG+swOXUPIe6RJh/zUOgWFBSO k0ZitEqJu640sh96pdqmBD/6Q+xAP7CoBFRyUbVwTyTmxd3zl52l/VJdd+/Y7IWaOW +79zqTQH7vaIGtZSwA6xoEyna0LErkSGc0pG1SoSFwBjbC7cPSvTjAPavIfxL0rQZY hgTazPSzAmCh9IK0SSJBry9BEUI5apqCp4r1Buj6nO3ssd2QTLRCPKsln5uET1KvNM +nkNuaeeFSh9Q== 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 5.10 130/137] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc. Date: Tue, 6 Jul 2021 07:21:56 -0400 Message-Id: <20210706112203.2062605-130-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706112203.2062605-1-sashal@kernel.org> References: <20210706112203.2062605-1-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 b3c63e06838d..afd2b1f12d49 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3558,6 +3558,11 @@ 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