Message-Id: <20210729203740.1377045-1-u.kleine-koenig@pengutronix.de>
Date:   Thu, 29 Jul 2021 22:37:35 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>, kernel@...gutronix.de,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-pci@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Russell Currey <ruscur@...sell.cc>,
        "Oliver O'Halloran" <oohall@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Rafał Miłecki <zajec5@...il.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        Sathya Prakash <sathya.prakash@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        Frederic Barrat <fbarrat@...ux.ibm.com>,
        Andrew Donnellan <ajd@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vadym Kochan <vkochan@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Jiri Pirko <jiri@...dia.com>, Ido Schimmel <idosch@...dia.com>,
        Simon Horman <simon.horman@...igine.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Michael Buesch <m@...s.ch>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Fiona Trahe <fiona.trahe@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Wojciech Ziemba <wojciech.ziemba@...el.com>,
        Alexander Duyck <alexanderduyck@...com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, linux-wireless@...r.kernel.org,
        linux-crypto@...r.kernel.org, qat-linux@...el.com,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        netdev@...r.kernel.org, oss-drivers@...igine.com,
        xen-devel@...ts.xenproject.org, linux-usb@...r.kernel.org
Subject: [PATCH v1 0/5] PCI: Drop duplicated tracking of a pci_dev's bound driver

Hello,

struct pci_dev tracks the bound pci driver twice. This series is about
removing this duplication.

The first two patches are just cleanups. The third patch introduces a
wrapper that abstracts access to struct pci_dev->driver. In the next
patch (hopefully) all users are converted to use the new wrapper and
finally the fifth patch removes the duplication.

Note this series is only build tested (allmodconfig on several
architectures).

I'm open to restructure this series if this simplifies things. E.g. the
use of the new wrapper in drivers/pci could be squashed into the patch
introducing the wrapper. Patch 4 could be split by maintainer tree or
squashed into patch 3 completely.

Best regards
Uwe

Uwe Kleine-König (5):
  PCI: Simplify pci_device_remove()
  PCI: Drop useless check from pci_device_probe()
  PCI: Provide wrapper to access a pci_dev's bound driver
  PCI: Adapt all code locations to not use struct pci_dev::driver
    directly
  PCI: Drop duplicated tracking of a pci_dev's bound driver

 arch/powerpc/include/asm/ppc-pci.h            |  3 +-
 arch/powerpc/kernel/eeh_driver.c              | 12 +++--
 arch/x86/events/intel/uncore.c                |  2 +-
 arch/x86/kernel/probe_roms.c                  |  2 +-
 drivers/bcma/host_pci.c                       |  6 ++-
 drivers/crypto/hisilicon/qm.c                 |  2 +-
 drivers/crypto/qat/qat_common/adf_aer.c       |  2 +-
 drivers/message/fusion/mptbase.c              |  4 +-
 drivers/misc/cxl/guest.c                      | 21 ++++----
 drivers/misc/cxl/pci.c                        | 25 ++++++----
 .../ethernet/hisilicon/hns3/hns3_ethtool.c    |  3 +-
 .../ethernet/marvell/prestera/prestera_pci.c  |  2 +-
 drivers/net/ethernet/mellanox/mlxsw/pci.c     |  2 +-
 .../ethernet/netronome/nfp/nfp_net_ethtool.c  |  2 +-
 drivers/pci/iov.c                             | 23 +++++----
 drivers/pci/pci-driver.c                      | 48 +++++++++----------
 drivers/pci/pci.c                             | 10 ++--
 drivers/pci/pcie/err.c                        | 35 +++++++-------
 drivers/pci/xen-pcifront.c                    |  4 +-
 drivers/ssb/pcihost_wrapper.c                 |  7 ++-
 drivers/usb/host/xhci-pci.c                   |  3 +-
 include/linux/pci.h                           |  2 +-
 22 files changed, 121 insertions(+), 99 deletions(-)


base-commit: 2734d6c1b1a089fb593ef6a23d4b70903526fe0c
-- 
2.30.2

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