Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756072AbcDNOQ0 (ORCPT ); Thu, 14 Apr 2016 10:16:26 -0400 Received: from mail-yw0-f170.google.com ([209.85.161.170]:36010 "EHLO mail-yw0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751018AbcDNOQY (ORCPT ); Thu, 14 Apr 2016 10:16:24 -0400 MIME-Version: 1.0 In-Reply-To: <570C429A.6090006@caviumnetworks.com> References: <1460414707-19153-1-git-send-email-jchandra@broadcom.com> <1460414707-19153-4-git-send-email-jchandra@broadcom.com> <570C429A.6090006@caviumnetworks.com> From: Jayachandran C Date: Thu, 14 Apr 2016 19:45:43 +0530 Message-ID: Subject: Re: [PATCH v2 3/4] PCI: generic, thunder: update to use generic ECAM API To: David Daney Cc: Bjorn Helgaas , Tomasz Nowicki , rafael@kernel.org, Arnd Bergmann , Will Deacon , Catalin Marinas , Hanjun Guo , Lorenzo Pieralisi , Sinan Kaya , jiang.liu@linux.intel.com, Stefano Stabellini , robert.richter@caviumnetworks.com, Marcin Wojtas , Liviu.Dudau@arm.com, Wangyijing , Suravee.Suthikulpanit@amd.com, msalter@redhat.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, Jon Masters Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2247 Lines: 59 Hi David, On Tue, Apr 12, 2016 at 6:04 AM, David Daney wrote: > On 04/11/2016 03:45 PM, Jayachandran C wrote: >> >> Use functions provided by drivers/pci/ecam.h for mapping the config >> space in drivers/pci/host/pci-host-common.c, and update its users to >> use 'struct pci_config_window' and 'struct pci_generic_ecam_ops' >> >> The changes are mostly to use 'struct pci_config_window' in place of >> 'struct gen_pci'. Some of the fields of gen_pci were only used >> temporarily and can be eliminated by using local variables or function >> arguments, these are not carried over to struct pci_config_window. >> >> pci-thunder-ecam.c and pci-thunder-pem.c are the only users of the >> pci_host_common_probe function and the gen_pci structure, these have >> been updated to use the new API as well. >> >> The patch does not introduce any functional changes other than a very >> minor one: with the new code, on 64-bit platforms, we do just a single >> ioremap for the whole config space. >> >> Signed-off-by: Jayachandran C > > > Tested-by: David Daney Thanks. > However, ... > >> --- >> drivers/pci/ecam.h | 5 ++ >> drivers/pci/host/Kconfig | 1 + >> drivers/pci/host/pci-host-common.c | 121 >> ++++++++++++++++-------------------- >> drivers/pci/host/pci-host-common.h | 47 -------------- >> drivers/pci/host/pci-host-generic.c | 50 +++------------ >> drivers/pci/host/pci-thunder-ecam.c | 37 +++-------- >> drivers/pci/host/pci-thunder-pem.c | 53 +++++----------- > > > ... The patch conflicts with a bug-fix patch I just sent to > pci-thunder-pem.c, so there will be a race to see who gets in first. I would expect this patchset to take more time than the bugfix. I will update the patches when the fix is queued to -next. > Also, I don't know if it would make sense to split out the pci-thunder-* > changes to a separate patch. In this case, I think splitting the pci-thunder-* will make it more complex than just switching everything to ecam.h in one go. If the patch needs to be split, I can move some of the simplification that was done to gen_pci structure and pci-host-common to a separate patch. JC.