Re: [PATCH v2 10/17] PCI: dwc: Drop iATU regions enumeration - dw_pcie_region_type

Rob Herring
2022-05-16T21:08:44Z

On Wed, May 04, 2022 at 12:46:31AM +0300, Serge Semin wrote:
> There is no point in having the dw_pcie_region_type enumeration for almost
> the same reasons as it was stated for dw_pcie_as_type. First of all it's
> redundant since the driver already has a set of the macros declared which
> describe the possible inbound and outbound iATU regions. Having an
> addition abstraction just needlessly complicates the code. Secondly
> checking the region type passed to the dw_pcie_disable_atu() method for
> validity is pointless since the erroneous situation is just ignored in the
> current method implementation. So to speak let's drop the redundant
> dw_pcie_region_type enumeration replacing it with the direct iATU
> direction macro usage.
>
> Since the dw_pcie_disable_atu() method now directly accepts the
> in-/outbound iATU region direction instead of the abstract region type we
> need to change the argument name and the arguments order. The later change
> makes the function prototype looking more logical since the passed index
> indicates an iATU window within the regions with the corresponding
> direction.
>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
>
> ---
>
> Changelog v2:
> - Move this patch to being applied before the IB/OB iATU windows setup
> simplification patch (@Rob).
> ---
> .../pci/controller/dwc/pcie-designware-ep.c | 4 +--
> .../pci/controller/dwc/pcie-designware-host.c | 2 +-
> drivers/pci/controller/dwc/pcie-designware.c | 28 +++++--------------
> drivers/pci/controller/dwc/pcie-designware.h | 13 ++-------
> 4 files changed, 13 insertions(+), 34 deletions(-)

Reviewed-by: Rob Herring <robh@kernel.org>