From patchwork Tue Jan 2 17:00:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sinan Kaya X-Patchwork-Id: 10141039 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 93CB36034B for ; Tue, 2 Jan 2018 17:01:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 86ECD28CED for ; Tue, 2 Jan 2018 17:01:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7A2E728D68; Tue, 2 Jan 2018 17:01:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0B6C628D48 for ; Tue, 2 Jan 2018 17:01:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751361AbeABRAl (ORCPT ); Tue, 2 Jan 2018 12:00:41 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:52766 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751354AbeABRAi (ORCPT ); Tue, 2 Jan 2018 12:00:38 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 78F6560A26; Tue, 2 Jan 2018 17:00:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1514912438; bh=SewW50YEqvrNZzEZA3UPk293BP3WhNexqHGa1JgZHfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XuiiIQM11LJjVjfd20PZs6uz6C3MxUgxHkr+ZbOj4dmHYAzxdrZit5kbUBUQO8VMT yhPz1b2BH1NzJBRufKJRU0pUNLHnkiPPu0n2RGOGvq4DFCWccJMghY5Odt8cDCKkgo TUFXwugsXE7h6jsrnS6nqyhrKt14nX7okva1ghbA= 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 21A0F60A26; Tue, 2 Jan 2018 17:00:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1514912437; bh=SewW50YEqvrNZzEZA3UPk293BP3WhNexqHGa1JgZHfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=APVl9bx4F5S46CaOtpa1EX8/iyuDgZmIibvYt16atfZ0KKUmWTnh2xavD6F5M4nEr y06CV9OZir/Nais7GOnE537ZPcsIBZJFpWHtziT4Xk3NHLWzY0heexoU7izmBzmcOh bhoCv9HNjcFrLCDhpLMJP+KREFdktOppgUNE1i9A= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 21A0F60A26 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 V3 6/6] PCI: Add device wait after slot and bus reset Date: Tue, 2 Jan 2018 12:00:23 -0500 Message-Id: <1514912423-13341-7-git-send-email-okaya@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1514912423-13341-1-git-send-email-okaya@codeaurora.org> References: <1514912423-13341-1-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 X-Virus-Scanned: ClamAV using ClamSMTP 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 eae04aa..2c9e9a9 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4161,7 +4161,7 @@ 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);