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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 D54D7ECDE5F for ; Mon, 23 Jul 2018 22:24:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96FC920671 for ; Mon, 23 Jul 2018 22:24:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96FC920671 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388234AbeGWX1h (ORCPT ); Mon, 23 Jul 2018 19:27:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55142 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388109AbeGWX1h (ORCPT ); Mon, 23 Jul 2018 19:27:37 -0400 Received: from smtp.corp.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9214F308625E; Mon, 23 Jul 2018 22:24:17 +0000 (UTC) Received: from gimli.home (ovpn-116-105.phx2.redhat.com [10.3.116.105]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8AEA086EF4; Mon, 23 Jul 2018 22:24:14 +0000 (UTC) Subject: [PATCH 0/2] PCI: NVMe reset quirk From: Alex Williamson To: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org Date: Mon, 23 Jul 2018 16:24:14 -0600 Message-ID: <20180723221533.4371.90064.stgit@gimli.home> User-Agent: StGit/0.18-102-gdf9f MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Mon, 23 Jul 2018 22:24:17 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As discussed in the 2nd patch, at least one NVMe controller sometimes doesn't like being reset while enabled and another will timeout during a subsequent re-enable if it happens too quickly after reset. Introduce a device specific reset quirk for all NVMe class devices so that we can try to get reliable behavior from them for device assignment and any other users of the PCI subsystem reset interface. Patches against current PCI next branch. Thanks, Alex --- Alex Williamson (2): PCI: Export pcie_has_flr() PCI: NVMe device specific reset quirk drivers/pci/pci.c | 3 + drivers/pci/quirks.c | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 1 3 files changed, 115 insertions(+), 1 deletion(-)