Thread (20 messages) 20 messages, 3 authors, 2024-11-15

Re: [PATCH v2 11/11] Remove devres from pci_intx()

From: Thomas Gleixner <hidden>
Date: 2024-11-13 16:22:48
Also in: kvm, linux-ide, linux-input, linux-pci, linux-wireless, lkml, xen-devel

On Wed, Nov 13 2024 at 13:41, Philipp Stanner wrote:
pci_intx() is a hybrid function which can sometimes be managed through
devres. This hybrid nature is undesirable.

Since all users of pci_intx() have by now been ported either to
always-managed pcim_intx() or never-managed pci_intx_unmanaged(), the
devres functionality can be removed from pci_intx().

Consequently, pci_intx_unmanaged() is now redundant, because pci_intx()
itself is now unmanaged.

Remove the devres functionality from pci_intx(). Have all users of
pci_intx_unmanaged() call pci_intx(). Remove pci_intx_unmanaged().

Signed-off-by: Philipp Stanner <redacted>
---
 drivers/misc/cardreader/rtsx_pcr.c            |  2 +-
 drivers/misc/tifm_7xx1.c                      |  6 +--
 .../net/ethernet/broadcom/bnx2x/bnx2x_main.c  |  2 +-
 drivers/net/ethernet/brocade/bna/bnad.c       |  2 +-
 drivers/ntb/hw/amd/ntb_hw_amd.c               |  4 +-
 drivers/ntb/hw/intel/ntb_hw_gen1.c            |  2 +-
 drivers/pci/devres.c                          |  4 +-
 drivers/pci/msi/api.c                         |  2 +-
 drivers/pci/msi/msi.c                         |  2 +-
 drivers/pci/pci.c                             | 43 +------------------
 drivers/vfio/pci/vfio_pci_core.c              |  2 +-
 drivers/vfio/pci/vfio_pci_intrs.c             | 10 ++---
 drivers/xen/xen-pciback/conf_space_header.c   |  2 +-
 include/linux/pci.h                           |  1 -
 14 files changed, 22 insertions(+), 62 deletions(-)
Now I'm utterly confused. This undoes the pci_intx_unmanaged() churn
which you carefully split into several patches first.

So the net change is that:

   1) pci_intx() is now always unmanaged

   2) a couple of drivers use pcim_intx() now instead of pci_intx()

The obvious ordering is:

   1) Convert the drivers which need the managed version to use
      pcim_intx()

   2) Remove the managed warning in pci_intx() and clean up the comment

   3) Remove __pcim_intx() and invoke pci_intx() in the devres code.

No?

Thanks,

        tglx
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