From patchwork Tue May 7 06:28:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ning.a.zhang@intel.com X-Patchwork-Id: 1096160 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-ide-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44yqRm4Gp9z9sBV for ; Tue, 7 May 2019 16:28:20 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726253AbfEGG2T (ORCPT ); Tue, 7 May 2019 02:28:19 -0400 Received: from mga04.intel.com ([192.55.52.120]:3840 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726085AbfEGG2T (ORCPT ); Tue, 7 May 2019 02:28:19 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 May 2019 23:28:18 -0700 X-ExtLoop1: 1 Received: from ning-debian.sh.intel.com ([10.239.16.122]) by FMSMGA003.fm.intel.com with ESMTP; 06 May 2019 23:28:17 -0700 From: ning.a.zhang@intel.com To: axboe@kernel.dk, tj@kernel.org, linux-ide@vger.kernel.org Cc: dpetigara@broadcom.com, f.fainelli@gmail.com, ning.a.zhang@intel.com Subject: [PATCH] libata: skip link debounce on resume Date: Tue, 7 May 2019 14:28:07 +0800 Message-Id: <20190507062807.24259-1-ning.a.zhang@intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Sender: linux-ide-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org From: Zhang Ning when link has flag: ATA_LFLAG_NO_DB_DELAY, skip link debounce. Change-Id: Ibcac689d7be97c1e139f87d416498a269ff2abf4 Signed-off-by: Zhang Ning --- drivers/ata/libata-core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index adf28788cab5..1fcb3190491e 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3838,6 +3838,8 @@ int sata_link_debounce(struct ata_link *link, const unsigned long *params, /* DET stable? */ if (cur == last) { + if (link->flags & ATA_LFLAG_NO_DB_DELAY) + return 0; if (cur == 1 && time_before(jiffies, deadline)) continue; if (time_after(jiffies,