From patchwork Fri Aug 18 14:58:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 9909363 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 77EB8602C8 for ; Fri, 18 Aug 2017 15:02:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7299328505 for ; Fri, 18 Aug 2017 15:02:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6766A28670; Fri, 18 Aug 2017 15:02:08 +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=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, RCVD_IN_DNSWL_HI 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 52C212860B for ; Fri, 18 Aug 2017 15:02:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751267AbdHRPBv (ORCPT ); Fri, 18 Aug 2017 11:01:51 -0400 Received: from lelnx193.ext.ti.com ([198.47.27.77]:25728 "EHLO lelnx193.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752407AbdHRO7C (ORCPT ); Fri, 18 Aug 2017 10:59:02 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelnx193.ext.ti.com (8.15.1/8.15.1) with ESMTP id v7IEwwjw013947; Fri, 18 Aug 2017 09:58:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1503068338; bh=9sGw+UyyJSby0H3tFB6DM9gaQQK3WCK4w8X8TDWskJU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=wWQNC1/6/g0+3PNXQRs4D7TTQ7lBVGdNS+JuDa4Q1KSqNgHfVo4oyt6w7CRnrUpC3 PICYFD4KRSXcRXfGTrIfMaJ1nXtk6CLQoCEr0tR+egD4pFX7wMJJjcU2gRtI/D3MNN J5gjRTGQl4GeK6uBy+8wUAOlPW/xZaOASOYY1bmw= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id v7IEwwoF012393; Fri, 18 Aug 2017 09:58:58 -0500 Received: from DFLE115.ent.ti.com (10.64.6.36) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.845.34; Fri, 18 Aug 2017 09:58:58 -0500 Received: from DFLE103.ent.ti.com (10.64.6.24) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.845.34; Fri, 18 Aug 2017 09:58:58 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE103.ent.ti.com (10.64.6.24) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.845.34 via Frontend Transport; Fri, 18 Aug 2017 09:58:58 -0500 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id v7IEwKkA023721; Fri, 18 Aug 2017 09:58:55 -0500 From: Kishon Vijay Abraham I To: Bjorn Helgaas CC: Joao Pinto , Arnd Bergmann , , , , , , Subject: [PATCH 12/18] PCI: dwc: designware-ep: Do not disable BARs during initialization Date: Fri, 18 Aug 2017 20:28:04 +0530 Message-ID: <20170818145810.17649-13-kishon@ti.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170818145810.17649-1-kishon@ti.com> References: <20170818145810.17649-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 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 Some platforms like K2G has reserved use of BAR_0 which shouldn't be disabled by software. Avoid disabling all BARs during initialization. Signed-off-by: Kishon Vijay Abraham I --- drivers/pci/dwc/pcie-designware-ep.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/pci/dwc/pcie-designware-ep.c b/drivers/pci/dwc/pcie-designware-ep.c index e70ebe3b9b6f..b3205df38d52 100644 --- a/drivers/pci/dwc/pcie-designware-ep.c +++ b/drivers/pci/dwc/pcie-designware-ep.c @@ -283,7 +283,6 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) { int ret; void *addr; - enum pci_barno bar; struct pci_epc *epc; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); struct device *dev = pci->dev; @@ -312,9 +311,6 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) return -ENOMEM; ep->outbound_addr = addr; - for (bar = BAR_0; bar <= BAR_5; bar++) - dw_pcie_ep_reset_bar(pci, bar); - if (ep->ops->ep_init) ep->ops->ep_init(ep);