On Wed, 2024-11-13 at 17:22 +0100, Thomas Gleixner wrote:

On Wed, Nov 13 2024 at 13:41, Philipp Stanner wrote:

quoted

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.

Have you read the email I have linked?

There is also the cover-letter (does anyone in the community ever read
those?) which explicitly states:

"Patch "Remove devres from pci_intx()" obviously reverts the previous
patches that made drivers use pci_intx_unmanaged(). But this way it's
easier to review and approve. It also makes sure that each checked out
commit should provide correct behavior, not just the entire series as a
whole."
P.

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