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[ Upstream commitd1cf738f2b] dw_pcie_disable_atu() was introduced byf8aed6ec62("PCI: dwc: designware: Add EP mode support") and supported only the viewport version of the iATU CSRs. DW PCIe IP cores v4.80a and newer also support unrolled iATU/eDMA space. Callers of dw_pcie_disable_atu(), including pci_epc_ops.clear_bar(), pci_epc_ops.unmap_addr(), and dw_pcie_setup_rc(), don't work correctly when it is enabled. Add dw_pcie_disable_atu() support for controllers with unrolled iATU CSRs enabled. [bhelgaas: commit log] Fixes:f8aed6ec62("PCI: dwc: designware: Add EP mode support") Link: https://lore.kernel.org/r/20220624143428.8334-3-Sergey.Semin@baikalelectronics.ru Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.