From patchwork Mon Nov 27 06:20:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sinan Kaya X-Patchwork-Id: 841482 X-Patchwork-Delegate: bhelgaas@google.com 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-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=codeaurora.org header.i=@codeaurora.org header.b="NLVkNJkb"; dkim=pass (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="QBGP6SLx"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3ylcBM02vwz9sPm for ; Mon, 27 Nov 2017 17:21:15 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751378AbdK0GUp (ORCPT ); Mon, 27 Nov 2017 01:20:45 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:48932 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751197AbdK0GUn (ORCPT ); Mon, 27 Nov 2017 01:20:43 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 3BFF869B3E; Mon, 27 Nov 2017 06:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1511763643; bh=OFTEhXMhOn+ouQotubtUZQFwW9haejBp2Gs5CO3q4VE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NLVkNJkb9v8aHpZxSpwqI4ykrdJFklwd1ajkExZKPPalr8JJ9QT5KlZzPOUNHhlCr 3k7LZ8CZxIXLUhwXiF7sm42wcS1wzwjJ9sfFHggm92w/Dz/8BJAt99ezDbFnL5Gn9N p4izJRoXYMOBqIgi6M5hn6M0a4droag3+fOPkDEk= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED, T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from drakthul.qualcomm.com (global_nat1_iad_fw.qualcomm.com [129.46.232.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: okaya@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id F010E69B3A; Mon, 27 Nov 2017 06:20:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1511763642; bh=OFTEhXMhOn+ouQotubtUZQFwW9haejBp2Gs5CO3q4VE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QBGP6SLxz5ofRT2B6jM0QxKTlUBm7wXM0PimNRxh1Nit3G3r4+eXXUNPD+pMuPzrY ZAJ4371LF8YqBQ8M5FU27NTuriUHCLgec8WvXtpefgQJcVEmeNyy7804uWdV4YSeGG +vc7+rGa+eklNRPAKhdSJ68/t/VaQCxiDAm/nUik= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org F010E69B3A Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=okaya@codeaurora.org From: Sinan Kaya To: linux-pci@vger.kernel.org, timur@codeaurora.org Cc: linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sinan Kaya , Bjorn Helgaas , linux-kernel@vger.kernel.org (open list) Subject: [PATCH V2 6/7] PCI: add device wait after slot and bus reset Date: Mon, 27 Nov 2017 01:20:27 -0500 Message-Id: <1511763628-11856-7-git-send-email-okaya@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1511763628-11856-1-git-send-email-okaya@codeaurora.org> References: <1511763628-11856-1-git-send-email-okaya@codeaurora.org> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Rev 3.1 Sec 2.3.1 Request Handling Rules indicates that a device can issue CRS following secondary bus reset. Handle device presence gracefully. Signed-off-by: Sinan Kaya Reviewed-by: Christoph Hellwig --- drivers/pci/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 0a9a696..8472c24 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4035,7 +4035,7 @@ int pci_reset_bridge_secondary_bus(struct pci_dev *dev) { pcibios_reset_secondary_bus(dev); - return 0; + return pci_dev_wait(dev, "bus reset", PCIE_RESET_READY_POLL_MS); } EXPORT_SYMBOL_GPL(pci_reset_bridge_secondary_bus);