[v3,0/8] PCI: Drop duplicated tracking of a pci_dev's bound driver

Message

Uwe Kleine-König Aug. 11, 2021, 8:06 a.m. UTC

From: Uwe Kleine-König <[e-mail]>

Hello,

Today the following is always true for a struct pci_dev *pdev:

	pdev->driver ==
		pdev->dev.driver ? to_pci_driver(pdev->dev.driver) : NULL

This series is about getting rid of struct pci_dev::driver. The first
three patches are unmodified compared to v2 (apart from an added
Reviewed-by tag) and are just minor cleanups.

Patch #4 replaces all usages of pci_dev::driver->name by
dev_driver_string().

Patch #5 simplifies struct mpt_pci_driver by dropping an unused
parameter from a function callback. The calculation of this parameter
made use of struct pci_dev::driver.

Patch #6 simplifies adf_enable_aer() and moves one assignment done in
that function to the initializer of the respective static data.

Patch #7 then modifies all remaining users of struct pci_dev::driver to
use to_pci_driver(pdev->dev.driver) instead and finally patch #8 gets
rid of the driver member.

Note this series is only build tested.

Theoretically patches #4 and #7 could be split by subsystem, there are
no dependencies, but I'd prefer that all patches go in together via the
pci tree to simplify the procedure. If you don't agree please speak up.

Best regards
Uwe

Uwe Kleine-König (8):
  PCI: Simplify pci_device_remove()
  PCI: Drop useless check from pci_device_probe()
  xen/pci: Drop some checks that are always true
  PCI: replace pci_dev::driver usage that gets the driver name
  scsi: message: fusion: Remove unused parameter of mpt_pci driver's
    probe()
  crypto: qat - simplify adf_enable_aer()
  PCI: Replace pci_dev::driver usage by pci_dev::dev.driver
  PCI: Drop duplicated tracking of a pci_dev's bound driver

 arch/powerpc/include/asm/ppc-pci.h            |  7 ++-
 arch/powerpc/kernel/eeh_driver.c              | 10 +--
 arch/x86/events/intel/uncore.c                |  2 +-
 arch/x86/kernel/probe_roms.c                  |  2 +-
 drivers/bcma/host_pci.c                       |  7 ++-
 drivers/crypto/hisilicon/qm.c                 |  2 +-
 drivers/crypto/qat/qat_4xxx/adf_drv.c         |  7 +--
 drivers/crypto/qat/qat_c3xxx/adf_drv.c        |  7 +--
 drivers/crypto/qat/qat_c62x/adf_drv.c         |  7 +--
 drivers/crypto/qat/qat_common/adf_aer.c       | 10 +--
 .../crypto/qat/qat_common/adf_common_drv.h    |  2 +-
 drivers/crypto/qat/qat_dh895xcc/adf_drv.c     |  7 +--
 drivers/message/fusion/mptbase.c              |  7 +--
 drivers/message/fusion/mptbase.h              |  2 +-
 drivers/message/fusion/mptctl.c               |  4 +-
 drivers/message/fusion/mptlan.c               |  2 +-
 drivers/misc/cxl/guest.c                      | 24 ++++---
 drivers/misc/cxl/pci.c                        | 30 +++++----
 .../ethernet/hisilicon/hns3/hns3_ethtool.c    |  2 +-
 .../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                             | 25 +++++---
 drivers/pci/pci-driver.c                      | 45 ++++++-------
 drivers/pci/pci.c                             |  4 +-
 drivers/pci/pcie/err.c                        | 36 ++++++-----
 drivers/pci/xen-pcifront.c                    | 63 +++++++++----------
 drivers/ssb/pcihost_wrapper.c                 |  8 ++-
 drivers/usb/host/xhci-pci.c                   |  2 +-
 include/linux/pci.h                           |  1 -
 30 files changed, 164 insertions(+), 167 deletions(-)

base-commit: 2734d6c1b1a089fb593ef6a23d4b70903526fe0c