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Decouple dw-edma-core.c from struct pci_dev as a step toward integration of dw-edma with pci-epf-test so the latter can initiate dma operations locally from the endpoint side. A barrier to such integration is the dependency of dw_edma_probe() and other functions in dw-edma-core.c on struct pci_dev. The Synopsys DesignWare dw-edma driver was designed to run on host side of PCIe link to initiate DMA operations remotely using eDMA channels of PCIe controller on the endpoint side. This can be inferred from seeing that dw-edma uses struct pci_dev and accesses hardware registers of dma channels across the bus using BAR0 and BAR2. The ops field of struct dw_edma in dw-edma-core.h is currenty undefined: const struct dw_edma_core_ops *ops; However, the kernel builds without failure even when dw-edma driver is enabled. Instead of removing the currently undefined and usued ops field, define struct dw_edma_core_ops and use the ops field to decouple dw-edma-core.c from struct pci_dev. Signed-off-by: Alan Mikhak <alan.mikhak@sifive.com> Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Link: https://lore.kernel.org/r/1586971629-30196-1-git-send-email-alan.mikhak@sifive.com Signed-off-by: Vinod Koul <vkoul@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.