1. Introduce generic capability search functions.
2. dwc/cdns use common PCI host bridge APIs for finding the capabilities.
3. Use cdns_pcie_find_*capability to avoid hardcode.
4. Add new patch for MAINTAINERS.

Changes since v5:
- If you put the helpers in drivers/pci/pci.c, they unnecessarily enlarge
  the kernel's .text section even if it's known already at compile time
  that they're never going to be used (e.g. on x86).
- Move the API for find capabilitys to a new file called
  pci-host-helpers.c.
- Add new patch for MAINTAINERS.

Changes since v4:
- Resolved [v4 1/4] compilation warning.
- The patch subject and commit message were modified.

Changes since v3:
- Resolved [v3 1/4] compilation error.
- Other patches are not modified.

Changes since v2:
- Add and split into a series of patches.

Hans Zhang (5):
  PCI: Introduce generic capability search functions
  PCI: dwc: Use common PCI host bridge APIs for finding the capabilities
  PCI: cadence: Use common PCI host bridge APIs for finding the
    capabilities
  PCI: cadence: Use cdns_pcie_find_*capability to avoid hardcode.
  MAINTAINERS: Add entry for PCI host controller helpers

 MAINTAINERS                                   |  6 ++
 drivers/pci/controller/Kconfig                | 17 ++++
 drivers/pci/controller/Makefile               |  1 +
 drivers/pci/controller/cadence/Kconfig        |  1 +
 .../pci/controller/cadence/pcie-cadence-ep.c  | 40 ++++----
 drivers/pci/controller/cadence/pcie-cadence.c | 25 +++++
 drivers/pci/controller/cadence/pcie-cadence.h |  8 +-
 drivers/pci/controller/dwc/Kconfig            |  1 +
 drivers/pci/controller/dwc/pcie-designware.c  | 71 +-------------
 drivers/pci/controller/pci-host-helpers.c     | 98 +++++++++++++++++++
 drivers/pci/pci.h                             |  7 ++
 11 files changed, 187 insertions(+), 88 deletions(-)
 create mode 100644 drivers/pci/controller/pci-host-helpers.c


base-commit: a1cffe8cc8aef85f1b07c4464f0998b9785b795a
-- 
2.25.1