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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable 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 757BDC00319 for ; Wed, 27 Feb 2019 07:48:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50C7D21852 for ; Wed, 27 Feb 2019 07:48:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729009AbfB0Hse convert rfc822-to-8bit (ORCPT ); Wed, 27 Feb 2019 02:48:34 -0500 Received: from coyote.holtmann.net ([212.227.132.17]:35287 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726702AbfB0Hsd (ORCPT ); Wed, 27 Feb 2019 02:48:33 -0500 Received: from marcel-macpro.fritz.box (p4FF9F361.dip0.t-ipconnect.de [79.249.243.97]) by mail.holtmann.org (Postfix) with ESMTPSA id 5B34ACF2AE; Wed, 27 Feb 2019 08:56:27 +0100 (CET) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Subject: Re: [PATCH 0/2] Reduce delay after sending baudrate request for WCN3990 From: Marcel Holtmann In-Reply-To: <20190226200848.154216-1-mka@chromium.org> Date: Wed, 27 Feb 2019 08:48:31 +0100 Cc: Johan Hedberg , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Balakrishna Godavarthi , Hemantg Content-Transfer-Encoding: 8BIT Message-Id: <45D9EB4B-C81A-4970-9ED1-3737A0AF771F@holtmann.org> References: <20190226200848.154216-1-mka@chromium.org> To: Matthias Kaehlcke X-Mailer: Apple Mail (2.3445.102.3) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Matthias, > The current 300ms delay after a baudrate change is extremely long. > For WCM3990 it is sufficient to wait 10ms after the baudrate change > request has been sent over the wire. > > Also use msleep() instead of a set_current_state() / schedule_timeout() > combo. > > Matthias Kaehlcke (2): > hci_qca: Use msleep() instead of open coding it > hci_qca: Reduce delay after sending baudrate request for WCN3990 > > drivers/bluetooth/hci_qca.c | 30 +++++++++++++++++++++--------- > 1 file changed, 21 insertions(+), 9 deletions(-) patch 1/2 has been applied to bluetooth-next tree. The patch 2/2 fails to apply. Regards Marcel