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32b313ce9d
When returning a NULL pointer, use "NULL" instead of "0". Fixes sparse warning given by executing "make C=2 drivers/pci/": CHECK drivers/pci/endpoint/pci-epc-core.c drivers/pci/endpoint/pci-epc-core.c: note: in included file: ./include/linux/pci-ep-cfs.h:22:16: warning: Using plain integer as NULL pointer CHECK drivers/pci/endpoint/pci-epf-core.c drivers/pci/endpoint/pci-epf-core.c: note: in included file: ./include/linux/pci-ep-cfs.h:31:16: warning: Using plain integer as NULL pointer Link: https://lore.kernel.org/r/80895f7465719edb3aa259e907acc4bc3217945c.1600378209.git.gustavo.pimentel@synopsys.com Reported-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Joao Pinto <jpinto@synopsys.com>
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.