From patchwork Thu Jan 13 15:46:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Menzel X-Patchwork-Id: 1579698 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-ide-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4JZTM26ffWz9sP7 for ; Fri, 14 Jan 2022 02:46:54 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233761AbiAMPqx (ORCPT ); Thu, 13 Jan 2022 10:46:53 -0500 Received: from mx3.molgen.mpg.de ([141.14.17.11]:57255 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S236269AbiAMPqu (ORCPT ); Thu, 13 Jan 2022 10:46:50 -0500 Received: from handsomejack.molgen.mpg.de (handsomejack.molgen.mpg.de [141.14.17.248]) by mx.molgen.mpg.de (Postfix) with ESMTP id 7692761EA191E; Thu, 13 Jan 2022 16:46:47 +0100 (CET) From: Paul Menzel To: Damien Le Moal Cc: linux-ide@vger.kernel.org, Paul Menzel Subject: [PATCH 0/2][RFC] Make delay before debouncing configurable Date: Thu, 13 Jan 2022 16:46:33 +0100 Message-Id: <20220113154635.17581-1-pmenzel@molgen.mpg.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org The 200 ms delay before debouncing the PHY was introduced for some buggy old controllers. To decrease the boot time to come closer do instant boot, add a parameter so users can override that delay. The current implementation has several drawbacks, and is just a proof of concept, which some experienced Linux kernel developer can probably implement in a better way. One problem is, that the warning is shown for each link and not just per controller. Paul Menzel (2): ata: Add module parameter `debounce_delay_ms` ata: Warn about removal of debounce delay in Linux 5.19 Documentation/admin-guide/kernel-parameters.txt | 6 ++++++ drivers/ata/libata-core.c | 4 ++++ drivers/ata/libata-sata.c | 12 +++++++++--- drivers/ata/libata.h | 1 + 4 files changed, 20 insertions(+), 3 deletions(-)